The Dark Side of the Moon is the eighth studio album by English rock band Pink Floyd, released on 1 March 1973 by Harvest Records. The album built on ideas explored in earlier recordings and live shows, but lacks the extended instrumental excursions that characterised their earlier work. Its themes explore conflict, greed, the passage of time, and mental illness, the latter partly inspired by the deteriorating mental state of founding member and principal contributor, Syd Barrett. Developed during live performances, an early version was premiered several months before recording began; new material was recorded in two sessions in 1972 and 1973 at Abbey Road in London.

The album features metronomic sound effects during "Speak to Me", and tape loops opening "Money". Mason created a rough version of "Speak to Me" at his home, before completing it in the studio. The track serves as an overture and contains cross-fades of elements from other pieces on the album. A piano chord, replayed backwards, serves to augment the build-up of effects, which are immediately followed by the opening of "Breathe". Mason received a rare solo composing credit for "Speak to Me". The sound effects on "Money" were created by splicing together Waters' recordings of clinking coins, tearing paper, a ringing cash register, and a clicking adding machine, which were used to create a 7-beat effects loop (later adapted to four tracks in order to create a "walk around the room" effect in quadraphonic presentations of the album). At times the degree of sonic experimentation on the album required the engineers and band to operate the mixing console's faders simultaneously, in order to mix down the intricately assembled multitrack recordings of several of the songs (particularly "On the Run"). Along with the conventional rock band instrumentation, Pink Floyd added prominent synthesizers to their sound. For example, the band experimented with an EMS VCS 3 on "Brain Damage" and "Any Colour You Like", and a Synthi A on "Time" and "On the Run". They also devised and recorded unconventional sounds, such as an assistant engineer running around the studio's echo chamber (during "On the Run"), and a specially treated bass drum made to simulate a human heartbeat (during "Speak to Me", "On the Run", "Time" and "Eclipse"). This heartbeat is most prominent as the intro and the outro to the album, but it can also be heard sporadically on "Time" and "On the Run". "Time" features assorted clocks ticking, then chiming simultaneously at the start of the song, accompanied by a series of Rototoms. The recordings were initially created as a quadraphonic test by Parsons, who recorded each timepiece at an antique clock shop. Although these recordings had not been created specifically for the album, elements of this material were eventually used in the track.

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