Daniel Land

This article is based upon an essay I wrote as part of my postgraduate studies in the Musicology of Record Production at the London College of Music, under the tutelage of producer Mike Howlett (Tears For Fears, OMD) and Professor Simon Zagorski-Thomas. This course, which combined ideas from the ecological approach to perception, embodied cognition and the social construction of technological systems, examined how record production influences our interpretation of musical meaning.

This particular essay looks at the various ways that Brian Eno has used tape manipulation techniques to shape his ambient work, especially on his 1982 album Ambient 4: On Land. It argued that Eno achieved unusual sounds by creatively pushing the available technology of the time, particularly by slowing down tape recordings. It also argues that while Eno’s approach wasn’t widely adopted (because of its highly specific sound), digital offshoots and adaptations of these techniques now subtly shape aspects of contemporary music. 

This wasn’t my final dissertation—that was, essentially, on shoegaze—and I’m not publishing that just yet, as I may still wish to pursue my PhD to its conclusion. This essay was graded 84%, which I was obviously very pleased with. As part of this 2025 review, I’ve incorporated the feedback I received at the time, removed some sections that would be uninteresting to non-academic readers, and slightly expanded on my own experiments with tape techniques. That said, despite this light revision, what follows remains highly academic in tone and will likely stay that way until I can summon the energy for a more substantial rewrite.

 

LITERATURE REVIEW

The development of magnetic tape and its early uses has been comprehensively outlined by Channan (1995) and others. Keane (1980) has discussed the history of tape music composition and briefly examines the qualities of recorded sound at different speeds. Both Keane (1980) and Zagorski-Thomas (2014) refer, at least in passing, to the “chipmunk” recordings of double-speed vocals exhibited on novelty records. 

However, the use of slowed-down tapes as creative tools in their own right—and Eno’s somewhat esoteric engagement with this technology—has not been explored in the literature. Prendergast (2003) provides an overview of the ambient genre without addressing the specific technical aspects under consideration here. Eno himself was recently the subject of a book-length academic study (Albeiz and Pattie, 2016), but that work does not examine this use of technology. Tamm’s PhD thesis on Eno (1989), subsequently published by Da Capo Press, approaches Eno’s work from a musicological point of view; but aside from some brief mentions of tape-speed experimentation, it does not explore this technique in any sustained or specific way.

Though tape speed manipulation has been under-studied in the literature, the history of record production is replete with examples of artists who have used slowed-down tapes to creative ends. Roberto Gerhard, a pioneer in electronic music, frequently employed tape speed manipulation in his compositions; by altering playback speeds, he explored new textures and timbres, contributing significantly to the development of electroacoustic music (Heritage Quay, nd). Michel Chion, associated with the musique concrète movement, used tape speed variations to modify the pitch and texture of sounds in his composition Requiem (Designing Sound, 2016). This technique enabled him to create distinctive auditory experiences. 

In the 1960s, The Beatles' producer George Martin and engineer Geoff Emerick slowed down parts of the tapes on “Strawberry Fields Forever” to align two takes of the song with different tempos and pitches (Martin, 1979; Emerick, 1987). In the early 1970s, Led Zeppelin’s Jimmy Page applied vari-speed to drop the entire track of “No Quarter” by a semitone, giving it a darker, thicker mood (Lewis, 1990), similar to the early 2000s trend of slowing down drum recordings by 15% to achieve a deeper, more resonant and bass-heavy sound (Kozelek, 2008). In the 1990s, DJ Screw pioneered the “chopped and screwed” technique in Houston, slowing down hip-hop tracks to alter pitch and timing, creating a syrupy, psychedelic aesthetic that became foundational to Southern rap (Patel, 2001; Pitchfork, 2013). These are just a handful of examples; there are many more. 

 

AN ACCIDENTAL DISCOVERY

I first became intrigued by the sound qualities of slowed-down tapes in 2006. While recording shoegaze tracks (some of which I’d subsequently release on my first album), I’d often get sidetracked, exploring the ramifications of a new sound I’d created with guitars, keyboards, and pedals. I got into the habit of recording these brief instrumental interludes, with no aim in mind, other than that they may be of use in other future projects. 

One day, I was playing around in this manner, and came up with an idea that I thought would pair particularly well with a keyboard piece I’d made weeks earlier. But I had a compositional problem. The guitar part I was working on was in a key five semitones higher than the keyboard recording, whose sounds I had committed to tape with little hope of recalling or recreating. 

To get them to match, I had a few options, none of which were particularly satisfying. One option was to the new guitar part up 7 semitones, to match the existing piece an octave up (but when I tried this, it ruined the guitar part's quality somehow; part of its charm was its relatively low pitch). Another choice was to detune the guitar, but I didn’t trust the stability of my Danelectro 12-string guitar (a notoriously unstable instrument) to withstand the 5 semitone reduction required. Eventually, I hit upon a solution: to record the new piece as-is, import it into my digital audio workstation, and then lower the pitch to blend it with the original piece.

It is worth taking a sidestep here to clarify that by “lowering the pitch”, I do not mean pitch-correction (fixing poor tuning whilst maintaining tone and time), or time-stretching (maintaining pitch whilst increasing length) or even pitch-shifting (maintaining length whilst increasing pitch). What I am discussing is technically called resampling, and means slowing down the entire piece so that it sounds both slower and deeper in pitch—like playing a 45rpm record at 33rpm, or running tape at a slower speed on a multitrack recorder.

Having, like most listeners, had experience of accidentally setting 45rpm records at a slower speed, I expected to be disappointed with the results of the “slowed down” piece. But to my surprise, it worked very well; not only did the results seem musically and texturally successful (the two pieces combined to make a kind of music I could not have anticipated) but the tonality was rich and surprising. 

(This piece of music, with further additions and reworking, was later released as “Marina Way Garden”, on Pentimento, the first album by my ambient side-project, riverrrun).

Like every musician in history who has ever stumbled across a new technique, I briefly and foolishly thought I'd “invented” it. And I was so enthused that, over the course of the summer of 2006, I made perhaps twenty or thirty different pieces using the same process. The results were mixed (not everything worked from a compositional point of view), but I was always pleasantly surprised by how they sounded.  

The work I did that summer makes up the bulk of the first riverrun album; under that name I've released a further nine albums that are, really, just various forms of this same tape-speed experimentation. For example, the track “Dunkery Beacon”, from La Mer, was made by slowing piano chords down by three octaves. The 2016 Romer Shoal track “Jersey Narrows” features an element created by slowing my voice by three or four octaves, so that it took on the quality of thunder. 

Slowing down extant recordings of (admittedly, rather dreadful) New Age music I had made as a teenager in the mid-1990s made up significant chunks of the album La Mer. And countless tracks were made by slowing down elements of my shoegaze songs into something more ambient. The riverrun track “Dancing Ledge”, for example, is a simple repurposing of the Daniel Land & The Modern Painters song, “The Nights Are Falling”.

The question of why slowed-down recordings sounded so consistently pleasing to the ear began to fascinate me. Keane (1980) discusses the sonic characteristics that result from playing tapes at a slower speed—specifically, that halving the tape speed produces an octave drop in pitch and doubles the duration. He notes that “sounds take on whole new aspects” at lower speeds, including elongated and softened attack sounds, and explains how altering playback speed can bring sounds previously outside the range of human hearing into audibility (and vice versa)—which may account for some of the distinctive sonic qualities produced by this process.

But it didn't take long for me to realise that what actually fascinated me about these results was how much they evoked the tonal richness of Brian Eno’s On Land (particularly the tracks “Lizard Point”, “The Lost Day”, and “Dunwich Beach, Autumn, 1960”)—an album I’d long admired.

TAPE SPEEDS AND ON LAND

On Land is a unique album in Eno’s oeuvre. Many critics belatedely consider it to be his crowning achievement, but it is a mysterious collection, and its genius is not immediately apparent, even to those familiar with studio techniques. It describes a unique sound-world—one not necessarily always musical in origin. As one critic put it, it resembles “virtual ecosystems: murky drones and ambient noises like frog croaks, rattling chains and bells. Spurts of melody would bubble to the surface but only occasionally,” with Eno essentially “forcing the audience to examine the broader soundscape—to pay attention not to horizontal development (one moment to the next) but to what writer Eric Tamm would refer to as the vertical color of sound” (Weiner, 2004). At the time, though, the album landed in near-silence, leaving many critics—and presumably many listeners—perplexed by its unsettling drones, animal noises, and subterranean rumbles.

Eno’s idea for On Land took shape after a 1980 trip to Ghana, where he had gone to produce Edikanfo’s album The Pace Setters. What struck him most, though, was not the recording studio, but the nocturnal soundscape outside the house he stayed at—an intricate weave of insects, animals, and distant voices. He sat out "on the patio in the evenings with the microphone placed to pick up the widest possible catchment of ambient sounds" and listened to the result on his headphones; he found himself surprised that the results “became music”. He realised that he had been “moving towards a music that had this feeling… [allowing] the sounds to live their lives separately from one another, clustering occasionally but not "musically" bound together.” (Eno, 1982). 

Starting with Another Green World (1975), Eno began to experiment with music as a way of imagining landscapes. In the studio he discovered he could create a kind of psychoacoustic space—sounds that didn’t just reproduce real environments but exaggerated or even invented them. With On Land, he pushed this further, aiming to conjure not just places but the memories and inner images attached to them: “Lantern Marsh,” for example, was a real location, but one Eno could not specifically recall visiting; his experience of it “derives not from having visited it… but from having subsequently seen it on a map and imagining where and what it might be” (Eno, 1982).

(There is, of course, a direct and deliberate link here between Eno’s naming the pieces after specific locales, and the approach I have used to name my riverrun pieces since its first album in 2010).

Eno had actually begun to experiment with tape recorders in the mid-1960s. He later spoke of the “magical” experience of being able to “catch something identically on tape and then be able to play around with it, run it backwards” (Bangs, 1979). He was particularly interested in exploring what he referred to as “the plasticity of sound”, and its natural correlation to his fine art studies at Ipswich Art School (Baccigaluppi and Crane, 2011). Having collected tape recorders since this time at art school (Tannenbaum, 1985), Eno was aware of the creative potential of different tape speeds; his first recorded piece (in the mid-1960s) was made by recording a metal lampshade at different tape speeds. 

Keane (1980) discusses how from the late 1960s, until the 1980s, tape machines typically had a range of available two or three available tape speeds; reducing the speed of the tape machine by a half resulted in a tone an octave lower. Eno was particularly attracted to the sounds that occurred by recording at the highest speed, and then slowing the result down. “The deeper sound was so awesome at quarter speed”, he said later. “It was just, ‘Wow! This is fantastic.’ I'd never heard anything like it.” (Baccigaluppi and Crane, 2011).

Eno continued to experiment with tapes through his early solo career, including using two tape recorders to create a long-delay tape echo system in collaboration with Robert Fripp on No Pussyfooting (1973), and then on his 1975 solo album Discreet Music (Sheppard, 2008). 

Discreet Music was the first of series of releases by Eno that would later come to be named “ambient” music. The oft-repeated and largely apocryphal story of Eno’s “discovery” of ambient music whilst bed-ridden from an automobile accident has been comprehensively outlined elsewhere (Eno, 1975; Tamm, 1989; and many others), and mostly debunked (Sheppard, 2008)—it does not necessarily need further elucidation here, except to explain that, whilst incapacitated, Eno had become interested in quiet music that could serve as a background or tint to the environment. Discreet Music was Eno’s first overt attempt to create this kind of music.

The album’s first side consisted of a single, 30-minute-long synthesizer composition, in which Eno fed two simple but mutually compatible melodies into the tape-loop delay, from a synthesizer with a digital recall system. The piece was initially intended to be used as backdrop for a series of concerts by Eno and Robert Fripp, and was created in accidental and almost unintentional manner. After setting up and activating the tape delay system and programming a melody into the synthesizer in his home studio, Eno was interrupted by a ringing phone and visitors at the door. As he answered calls and dealt with interruptions, the setup continued to run. It was, in his words, "automatic music" and “almost made without listening to it” (Tamm, 1989). 

More relevant here is that in the process of setting up the track for playback, Eno accidentally set the Revox tape recorder at half speed (Williams, 1980). He was stunned by the results—and by how what had seemed like an indifferent synthesizer composition now sounded slow and majestic (Sheppard, 2008). Eno concluded that “It was probably one of the best things I’d ever done, and I didn’t even realise I was doing it at the time.” (O’Brien, 1978). 

Like his early experiments with tape recorders, this was another instance where Eno recognised the value of half-speed recordings, and Eno subsequently used variations of this half-speed approach in the composition of many subsequent albums such as Ambient 1: Music for Airports, whose signature piece (the stately “1/1”, with piano by Robert Wyatt), was mixed and released at half the speed it was recorded at (Sheppard, 2008). 

So, prior to On Land, many of Eno’s compositions had featured some degree of tape speed manipulation, and Eno has noted that many of his recordings are mixed and mastered at different speeds from the original recordings (Tamm, 1989; Sheppard, 2008)—Eno seemingly deciding at the very final stages of the recording process which register resonates with him most. Eno's reason for preferring slowed down sounds is similar to Keane's (1980)—it “does something to the timbre of sound that I like, by bringing upper harmonics into hearing range” (South, 1985).  

Eno also utilised this method when producing bands, such as Talking Heads. In a 2006 interview, Eno recalled how he had convinced the band to slow down the multitrack tape of “Take Me to the River” to two-thirds of its speed, so the backing track would have a slower, dirtier, grimier and more bass-heavy sound, and so that David Byrne would be forced to sing the over-familiar song in a now-unfamiliar key (Eno, 2006) [Footnote 1]. 

 

RE-MAKE / RE-MODEL

Back to On Land, which took two years to put together, due to the painstaking approach utilised by Eno in its construction—a process that involved slowing down tapes, working and reworking compositions, and looking for interesting juxtapositions. Eno described “feeding unheard tape into the mix, constant feeding and remixing, subtracting and ‘composting’” (1982), and that the final album was the result of “many processings and reprocessings… like making soup from the leftovers of the day before, which in turn was made from leftovers..." (Prendergast, 1989). 

Eno’s instrumentation also included “non-instruments like pieces of chain and sticks and stones” (Eno, 1982), as well as musical parts he had recorded for more conventional song projects (McKenna, 1982). His compositional process moved from using the “diagrammatic” synthesizer to incorporating acoustic instruments, and eventually to found sounds, environmental recordings, and other unconventional sources. Eno has noted that what initially seem to be environmental sounds—such as animal noises—are in fact his own voice (Kalbacher, 1982), a technique he continued on the following year's Apollo: Atmospheres & Soundtracks, where the animal-like sounds on “Matta” were created by slowing down an ocarina by two octaves (Sheppard, 2001).

Keyboardist Michael Beinhorn recalls a 1981 session where Eno projected landscape slides from New York’s Natural History Museum onto the wall, aiming to recreate the atmosphere of the African savannah (Sheppard, 2008). Beinhorn and bassist Bill Laswell are credited as co-composers of the album’s opening track, “Lizard Point", however, Beinhorn admitted, “I can’t pick out a note that actually comes from me… maybe it’s in there as half-speed tapes or processed in some way” (Reynolds, 2013).

Eno had a habit of reusing and manipulating contributions until they became unrecognisable. Material from sessions with Phil Collins and Percy Jones for Eno’s 1975 album Another Green World later resurfaced on Music for Films (1978), the Snatch collaboration “RAF” (1978), More Music for Films (1983), and the 1980 album Fourth World Volume One: Possible Musics, a collaboration with Jon Hassell [2]. One Phil Collins drum track, recorded for Another Green World’s “Sky Saw,” was particularly well-travelled, finding its way onto Eno’s 1976 co-write with Ultravox (“My Sex”) before being reused yet again in later compositions: 

“Then it became a piece called ‘M386’ on ‘Music for Films’. And it went on to even become something else now… This is a very, very interesting aspect of recording. An element can keep being reused and change identity in each place it slots in…” (Diliberto, 1993).

On Land is perhaps the zenith of this approach, since Eno incorporated into the mix not just elements of existing compositions, but sometimes whole extant pieces, some of which dated back to his earliest experiments with tape recorders:“I use the same pieces of tape and take little bits out of them, or play with the speed of them… nearly every idea I've ever had has been built into something somewhere. Some of the ideas in ‘On Land’ are absolutely years old and were among my first musical ideas. And they just waited in line until they were used.” (McKenna, 1982). 

 

(ON) LAND SPEED RECORD

Identifying the musical elements in On Land is difficult; it was only by importing the recordings into a DAW and examining them at altered playback speeds I was able to deduce how were recorded before they were transformed—or obscured—through the process of slowing down. By comparing the same material at its original release speed, and one octave higher, and then two octaves higher, it becomes possible to reconstruct the probable registers of the source material and to identify instrumental and harmonic details that are otherwise submerged in the finished mix.

On “Lizard Point” for example, the sound field at “record speed” is organic and alive-sounding, but also exceptionally unclear; to the extent that one can recognise any sound-source, the track appears to be made up of murky drones, the suggestion of bell tones, insect-like chatter, and what might even be mistaken for the distant lowing of cattle.

At one octave higher, however, certain details emerge: the bell tones prove to be an electric piano, with a handful of the louder notes displaying the distinctive timbral fingerprint of the Yamaha CP70. The stereo placement of the piano's notes suggests that there is more than one overdub at play, augmented possibly by vibraphone or celeste; it is possible that one of these is the keyboard part, originally played by Beinhorn, that has been slowed down and obscured beyond the original player's identification. There are also assorted percussion instruments including a clave or woodblock. In addition, various bass notes, played by Bill Laswell, but largely inaudible at record speed, can now be heard.

At two octaves higher, many of these details now betray a tell-tale “sped up” quality, and were therefore presumably recorded at a much lower speed. Yet the background insect chatter—and the supposed cattle herd—are revealed instead as the kinds of synthesizer sonorities familiar from Eno’s 1970s work; in fact, the “herd” effect recalls the double pitch-bending textures on “Two Rapid Formations” from Music for Films.

“The Lost Day” inhabits a similarly opaque sound-world. Eric Tamm (1989) described it as follows:

“The element of timbre takes over to the point of there being very few pitches in use, and often nothing that could really be called harmony…throughout, one hears an ominous, indefinable, very low sound that varies slightly in its color and dynamic intensity. An eerie muted metallic clinking that sounds like ropes hitting the mast of a sailboat at rest in the water comes and goes, as do […] indefinable noises, often reminiscent of collective natural phenomena like swarming insects, the baying of cattle, or the sound of a flock of ducks taking off from a body of water.”

This is a good description, although Tamm’s claim about the absence of harmony is actually wrong; it would be more accurate to say that the piece’s harmonic basis—a minor sixth chord within the Phrygian mode—is obscured rather than absent; the constituent parts, slowed down on tape, are now shifted towards the bass register, and thus their harmonic relationships are more difficult to perceive—though they are present. 

However, Tamm’s comparison of the sound to “ropes hitting the mast of a sailboat at rest in the water” is strikingly apt—especially since nowhere in his text does he seem to realize that Eno had deliberately set out to evoke precisely this effect. In a 1982 interview, Eno explained that the sound originated from a single note on a Fender Rhodes piano, played extremely softly so that “you only get the partials and harmonics as the tine of whatever it is hits the string” (Kalbacher, 1982). Eno was captivated by this timbre, describing it as having “a pull on me that I couldn’t explain,” and he structured the entire composition of “The Lost Day” around intensifying this uncanny resonance.

Later that year, during a visit to his parents in East Anglia over Christmas, Eno experienced a moment of recognition:

“I went for a walk on Christmas Day, a windy day. They live on a river… and as I was walking I heard… the sound of the metal guy wires banging against the masts of the yachts. They have metal masts on yachts, and this sound was so identical. I suddenly realised where I got this sound from.”

When “The Lost Day” is heard one octave higher, this sound's origin on the Fender Rhodes piano becomes more apparent. The part seems to have been overdubbed multiple times, with additional notes played using the same delicate technique. Stray piano figures—likely drawn from various takes—are scattered across the stereo field, interwoven with xylophone and vibraphone gestures. 

The “ominous” low sound identified by Tamm proves, on closer inspection, to be a relatively conventional synthesizer drone, subtly processed to alter its colour and tonal weight over time. This drone is paired with what, at this higher speed, resembles a somewhat clichéd “haunted-house” style wind effect (knowing Eno, likely created on a synthesizer). These particular elements register as “true” in the sense that they do not appear to have been noticeably sped up or slowed down. It is therefore reasonable to assume that this register reflects the approximate pitch range in which the material was originally recorded.

At two octaves higher, the supposed animal timbres seem instead percussive in origin—possibly created the rattling of cymbal edges with sticks rather than direct strikes—but interwoven with treated synthesizer chords whose reverb tails descend in pitch (perhaps created being bounced to tape as Eno turned up the speed of the multitrack tape recorder—this is a technique similar to that used on his track “The Dove”). The spectral synthesizer line that Tamm describes, when transposed to its likely original register, resolves into a fairly straightforward early-1980s synth-string sound.

What this analysis makes clear is that Eno’s method was not simply a matter of recording a whole composition at one speed, and then slowing it down (although I'm sure in his career he has done that). Rather, it makes clear that the tracks on On Land are in fact a patchwork of elements captured at different playback rates: some appear to have been reduced by an octave, others by two, while still others remain unaltered. My neat division into octave shifts is itself an oversimplification, of course; tape machines offered a range of intermediate speeds, and there is no reason to suppose that Eno confined himself to octave-based variations. He could—and almost certainly did—record at a variety of speeds and then combine the resulting material. 

This technique is particularly prevalent on On Land, but similar sonic characteristics can also be heard on other Eno albums. The following year’s Apollo: Atmospheres and Soundtracks (which presumably dovetailed with, or even overlapped, the On Land sessions) features several tracks in the same mould, exhibiting the telltale hallmarks of slowed-down sound—especially on “The Secret Place” and “Matta.” It is also worth noting that Apollo’s tracks “Under Stars I,” “Under Stars II,” and “Stars” appear to be different mixes, treatments, and speeds of the same underlying material, continuing Eno’s wider practice of reusing and transforming recorded elements. And the strangely treated, highly distinctive drone of “The Secret Place” later reappears (recontextualised, and sometimes repitched) in the Harold Budd/Brian Eno track “Lost in the Humming Air” (The Pearl, 1984), in Daniel Lanois’ “Fisherman’s Daughter” (Acadie, 1989), and most notably in Eno’s hour-long Thursday Afternoon (1985), an album which similarly features his signature use of slowed-down material, predominantly on piano. To return to the same quote as earlier this is, as Eno put it, the process of “making soup from the leftovers of the day before, which in turn was made from leftovers…" [3]

 

MUSICOLOGICAL PERSPECTIVE

This essay opened with a telling quote from Brian Eno, in the liner notes of the 1986 CD reissue of On Land, where he states, “I became interested in exaggerating and inventing rather than replicating spaces, experimenting in particular with various techniques of time distortion” (emphasis mine). This moment stands out as one of the few times Eno directly addresses the true essence of the album’s sonic character. Throughout the liner notes, Eno talks about his trip to Ghana, explores his move toward a unique “psychoacoustic space" by blurring foreground and background, and his shift from recreating familiar spaces to inventing new, immersive landscapes, influenced by Miles Davis, and Fellini’s Amarcord. 

However, although the liner notes run to nearly 1,000 words, Eno's fleeting mention of “experimenting with various forms of time distortion” is the only direct reference to the transformative tape-speed manipulation that is the real basis of On Land’s sound, and even here, he stops short of fully explaining it. 

This makes total sense, of course—artists often prefer to gatekeep or to protect their trade secrets. The natural rejoinder to this is that, even if one were to use the same equipment and techniques, aesthetic results would inevitably differ in unique and personal ways; this is a fact known by anyone who has ever bought a piece of musical equipment hoping to emulate their musical heroes. 

My own work as riverrun has shown this, I suppose—producing compositions in the approximate style of On Land is relatively easy, provided one has the ability to record on tape and slow it down (or use a digital equivalent) and, of course, has enough music theory knowledge to transpose and harmonize across different keys and modes. But so far as I'm aware, only one person has ever noticed what seems to me like an obvious connection between my work and On Land.

I would contend that Eno achieved unusual timbres by slowing down tapes to more musically coherent effect than arguably anyone before him. He went further than most would have thought possible—or even tasteful—by integrating recordings made at different speeds and pitches into a seamless whole. This, I would argue, is characteristic of Eno’s practice more generally: not necessarily inventing techniques outright—in fact, as some have noted, he has a magpie's eye (Sheppard, 2008)—but extending them beyond the limits of what most people would consider acceptable, and somehow making them not only palatable, but aesthetically compelling.

From a musicological perspective, by blending recordings from different moments, Eno was able to create composite pieces that transcended conventional performance, resulting in works that existed only within the recording process. This, of course, is far from being a radical observation—indeed, the whole literature of the Musicology of Record Production is predicated on this point. Simon Frith (2004) notes that since the 1960s, multitrack technology has allowed recording artists to create works that would not (or could not) necessarily translate to live performance. While this is true of many studio creations, Eno’s work from this period does seem to represent an extreme example. One can easily imagine a classical ensemble finding ways to translate Discreet Music, Ambient 1: Music for Airports, or Apollo: Atmospheres & Soundtracks into live performance—indeed, artists like BJ Cole and ensembles like Bang on a Can have done exactly that. But it is very hard to imagine the music (if it is music!) of On Land translating to live performance. Unlike the other examples of studio-bound music Frith describes, these results depended entirely on the technology of the time: only by slowing down or speeding up tapes could Eno blend elements in conflicting musical keys, align temporally dislocated sounds, and achieve the distinctive sonic character produced by slowed-down audio.

But is the timbre of slowed-down audio the only reason the recordings sound so rich, and so inviting? Eno, perhaps unsurprisingly, has a theory—that “as a maker you tend to put in twice as much as you need as a listener… as a listener you're much less demanding... you can take things that are much simpler, much more open, and much slower.” (Williams, 1980).

As Theberge (2012) has noted, “Whilst software tools emulate, in digital form, all the characteristics of the multitrack studio—from recording, to processing, to mixing—they also engender a new set of concepts and processes”. In my own work, I have partly sought to replicate and even extend Eno’s methodology by means of a digital technology which has afforded me the ability of a much wider degree of control over my virtual “tape speed” than Eno would have been able to achieve. I am technically able, for example, to slow down a recording by thousands of percent, placing it far below the range of human hearing—something that wouldn’t have been possible with the tape machines Eno used (Keane, 1980). However, I’ve chosen not to do so, as slowing a recording by more than a factor of four produces results that are extremely aesthetically unappealing. 

This is perhaps the reason why Eno's use of slowed-down tapes has not been adopted in a more widespread fashion (or studied in the literature). What has been discussed is a highly specific kind of music, and the tools and processes used to create it—whether analogue or digital—tend towards a specific musical outcome (in the case of On Land, one closer to musique concrete than rock). As Keane (1980) states, “All but the simplest… sounds become muddled when speed is lowered”, and it’s hard to see how applicable the extreme use of pitch changing, discussed here, would be within the relatively conservative sonic worlds of pop and rock. 

That said, contemporary music offers examples of digital offshoots derived from the technology used here. The slowed-down, dreamy textures of Vaporwave take samples from 80s pop music and drastically lower their speed; in genres such as Witch House, artists often used heavily pitch-shifted vocals to create haunting, otherworldly atmospheres [4]. Hip hop and trap frequently incorporate sped-up vocal samples as textural backdrops, a technique heard in artists like Travis Scott and Kanye West, which influence has fed into pop music, where the use of the sped-up “chipmunk” vocal style—often used to create light, playful vibes—has become a fixture in the mainstream and in the background of tracks by Coldplay, for example. 

While we might see the use of these effects as mere by-products of the technology used to create them—a classic case of technological determinism—one might also posit that that our collective ability to embrace such sonic extremes was not simply made possible by, but subtly shaped by, the musical experiments pioneered at “the edge of music” [5] by Eno and others, more than a generation ago.

 

FOOTNOTES

[1] Incidentally, I am sceptical of this recollection. It seems likely that Eno’s memory has exaggerated the degree of speed reduction over time. Slowing down a tape machine by a third of its total speed would result in a pitch drop of approximately seven semitones, or a fifth: semitone change = 12 × log2(new speed / original speed). So, 12 × log2(2/3) ≈ -7.02 semitones. (Online varispeed calculators will also confirm this.) Try importing an MP3 of “Take Me to the River” into your DAW and increasing its pitch by seven semitones, to judge whether it seems plausible that it was originally recorded at that tempo. It clearly was not—it sounds conspicuously “sped up.” A total speed reduction of around 10–15%, equivalent to a drop of two to three semitones, seems far more likely, and at this speed, the drums in particular seem timbrally similar to the recordings on the remainder of the album.

[2] I actually don't have a source to confirm this. My assumption is based on (a) Eno's known practice of re-using tapes (including those of the fruitful 1975 sessions with Percy Jones) and (b) The bass on this track having noticeable timbral similarities to recordings from those sessions, and (c) The improbability that Eno would have flown the mostly Wales-based Percy Jones to New York (where Eno was living, and the album was recorded) to play on one track only, when the remainder of the album features two other bass players—including the New York-based Jerome Harris.

[3] I have many, many other examples of Eno's reuse of material, but will mention just a few: the same, heavily-treated recording of Kyoko Inatome’s voice first appeared on Music for the Civic Recovery Centre (2000), re-emerged in several art installations over the following two decades, and most recently featured on Foreverandevernomore (2022). Music for the Civic Recovery Centre itself was constructed from material originally used in “Ikebukuro” on The Shutov Assembly (1992), which itself was made up of tapes Eno made for audio-visual installations in the 1980s. Similarly, a set of spoken-word tapes supplied by Laurie Anderson for the 1995 Self-Storage exhibition in London (Eno, 1996) later resurfaced in other projects, including Eno’s 2001 album Drawn from Life (with J. Peter Schwalm). In a 1995 diary entry, Eno described that the process of “reprocessing existing pieces” had resulted in “a good day's work”, and exclaiming to himself, “How often have I rediscovered this?” (Eno, 1996). It is a practice that, clearly, he continues to re-discover!

[4] When I wrote this, in 2017, I felt I was clutching at straws with this reference. In 2025 it seems positively archaic. If I were writing the essay today, I might instead have discussed in detail the “Slowed + Reverb” trend that started on platforms like YouTube over the last decade or so, where remixers digitally slowed down tracks and added reverb to create a nostalgic, introspective atmosphere.

[5] Eno’s own description, written under the pseudonym “C.S.J. Bofop”, in the liner notes to his album Neroli (1993).

 

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