Pink Floyd – The Dark Side of the Moon: Inside the Abbey Road Sessions

By the time Pink Floyd entered EMI’s Abbey Road studios in May 1972, much of The Dark Side of the Moon had already been heard by concert audiences. The group had been performing a continuous work under the title The Dark Side of the Moon: A Piece for Assorted Lunatics since January, altering the arrangements as the tour progressed. It gave them something unusual for an album subsequently celebrated as a masterpiece of studio construction: a complete running order, a set of recurring musical ideas and a working sense of how the music should move from one section to another.

The sessions, which ran from 30 May 1972 to 9 February 1973, were therefore less about finding songs than discovering what could be added to them. Pink Floyd were producing themselves, with Alan Parsons engineering and other Abbey Road staff contributing to the final edits and mixes. The band’s interest in tape manipulation, electronic instruments and sound effects went back several years. What changed here was the precision with which those elements were incorporated into the arrangements. Dark Side sounds elaborate, but its most effective production ideas tend to be closely connected to the subjects of Roger Waters’ lyrics.

An album built on stage

The early concerts reveal how far the material travelled before reaching vinyl. “On the Run”, originally performed as a more conventional guitar-and-keyboard piece, would become almost entirely electronic. The piano sequence that eventually supported Clare Torry’s vocal on “The Great Gig in the Sky” had previously been used for an instrumental passage associated with the mortality theme. Other parts of the suite were much closer to their final form. Working through the sequence in public gave the band time to judge its pacing, and also exposed the practical problems of playing tape effects alongside musicians.

Waters had chosen subjects that were deliberately direct: the passage of time, the pursuit of money, conflict, travel, madness and death. These were not episodes in a fictional story. The album relied instead on the recurrence of musical motifs and sounds to make separate songs feel like part of one performance. That principle was established before Abbey Road, but the recording sessions made it possible to sharpen each transition and give the effects a place within the music.

Making machines play in time

The seven-beat introduction to “Money” offers a good illustration of the physical work involved. Waters assembled recordings of coins, cash registers and other money-related noises into a repeating tape sequence. Its rhythm leads directly into his bass figure, before the band develops the song in 7/4 and eventually moves into 4/4 for the instrumental solos. It is easy to overlook the construction of that opening now that samples can be cut to a grid on a laptop. In 1972 the tape had to be recorded, edited and joined by hand, and its length determined the timing of the loop.

There was nothing new about tape as a musical medium. The BBC Radiophonic Workshop, musique concrète composers and other rock groups had been exploring it for years. Pink Floyd’s achievement was to use a cut-up recording as an integral part of an otherwise quite accessible song. The cash-register sequence supplies both the subject and the pulse. Rather than interrupting the performance, it sets it in motion.

“On the Run” takes the approach further. Its rapid, repeating notes came from an EMS Synthi AKS, an instrument that included a touch-sensitive keyboard and a rudimentary sequencer. The distinction matters: the sound is sometimes attributed to the related EMS VCS 3, but Parsons identified the AKS as the machine used on the track. The pattern was entered at a slower speed and played back rapidly, while filter settings, noise and other controls were manipulated during performance. Without modern MIDI sequencing or computer automation, the process required both preparation and hands-on control. The result is closer in method to later electronic dance music than to the band’s earlier extended guitar improvisations.

The sequence itself changes very little harmonically. Movement comes from shifts in timbre and dynamics, supported by footsteps, airport announcements and an abrupt explosion. That combination captures the anxiety of travel without relying on a sung narrative. For listeners interested in synthesiser history, it remains a particularly instructive recording: a repeated phrase, one electronic instrument and a series of live adjustments carrying almost an entire track.

Clocks, voices and the art of the transition

Parsons brought another ready-made collection of sounds to “Time”. He had recorded clocks for a quadraphonic demonstration before the album sessions; the ticking and alarms were repurposed for the song’s introduction. They are followed by Nick Mason’s roto-toms, an extended passage that gradually gives way to the full band. The length of that introduction is part of its effect, placing a collection of mechanical sounds ahead of a song concerned with years slipping past almost unnoticed.

Throughout the record, the effects were treated as components of a larger sequence. “Speak to Me” introduces sounds that recur later; “Time” returns to the chords and atmosphere of “Breathe”; the end of “Us and Them” runs into “Any Colour You Like”, while “Brain Damage” and “Eclipse” form a continuous closing passage. Abbey Road’s surviving documentation shows that these joins received detailed attention late in the project. On 1 February 1973, Parsons and Peter James completed further effects work and crossfades for side one. Further edits to “Money” and “Us and Them” followed on 6 February, and the revised master was assembled on 9 February.

The spoken voices, meanwhile, were recorded through a comparatively simple exercise. Waters prepared questions about violence, fear and death and asked people around the studio to answer them on tape. Road crew and other visitors contributed, alongside Abbey Road staff. Their remarks became part of the atmosphere of the record rather than conventional narration. The voices help connect Waters’ concerns with ordinary experience, and their placement within the mix gives the listener brief glimpses of other people without bringing the music to a halt.

A Sunday session with Clare Torry

One of the final major overdubs was recorded on 21 January 1973. Clare Torry, a session singer recommended by Parsons, arrived at Abbey Road to work on the piece that became “The Great Gig in the Sky”. Richard Wright’s piano provided the harmonic foundation, but there was no finished vocal melody for her to learn. After hearing the backing track, Torry improvised a performance that moved between restraint and full-throated intensity. An early attempt used an identifiable word; the band preferred the voice without lyrics.

The recording has sometimes been presented as a happy accident, but that overlooks both Wright’s carefully paced accompaniment and Torry’s ability to make spontaneous material sound structured. She was paid a session fee, reported by Abbey Road as £30 including Sunday overtime. Many years later, a dispute over authorship was settled, and later editions credit Torry alongside Wright. The performance remains a reminder that not every important studio contribution involved a new machine or an elaborate recording technique.

Engineering the finished record

Parsons’ role was substantial, although the production credit belonged to Pink Floyd. The sessions used Abbey Road’s 16-track equipment, and the group were willing to devote considerable effort to effects, overdubs and mixing. Chris Thomas was also involved in the mixing stage. The distinction between musical arrangement and sound engineering becomes difficult to maintain on tracks such as “Money” and “On the Run”: the recorded sound is part of what the composition actually consists of.

Yet the album is not relentlessly busy. Wright’s electric piano and organ often establish a calm background against which the effects become more striking. David Gilmour’s guitar solos, Mason’s measured playing and Waters’ bass figures give the record a clear band identity beneath its studio detail. “Us and Them”, with its spacious verses, dynamic choruses and Dick Parry’s saxophone, is as dependent on arrangement and restraint as “On the Run” is on its electronics.

The finished LP reached shops in March 1973. The striking Hipgnosis prism sleeve and the record’s extraordinary commercial life have since made it difficult to separate the music from its reputation. Returning to the sessions is useful for a different reason. The Dark Side of the Moon was shaped by a touring band working through a coherent set of songs, then using the resources of Abbey Road to make the sound effects, voices and transitions as important as the instrumental performances. That combination, rather than technology on its own, accounts for much of the record’s character.

Further reading

Sources and further documentation: Abbey Road studio documents; Sound On Sound: All About EMS, Part 2; Pink Floyd official history.