Roger Waters wrote "Money" as the album's blunt, cynical centerpiece — a song about greed that announces its subject before any lyric arrives, because the first thing you hear isn't a guitar or a drum, it's the unmistakable sound of commerce: a cash register slamming shut, coins spilling, paper ripping. Waters recorded these sounds individually at home on a simple tape recorder, then worked with engineer Alan Parsons at Abbey Road to sequence them into a continuous, rhythmically even loop — physically cutting and splicing tape, the same painstaking hand-assembly technique the Beatles had used seven years earlier for the swirling textures inside "Tomorrow Never Knows." The difference is what the loop is for. The Beatles' loops are atmosphere. Pink Floyd's loop is the beat.

What you’re hearing

Listen closely to the cash-register loop and you'll notice it isn't random noise — the sounds land in a steady, repeating rhythmic pattern, panned so they seem to move across the stereo field, functioning exactly like a drum pattern would, just built from sounds that have nothing to do with drums. Then the bass enters, and something else unusual happens: the verse riff sits in 7/4 time, one beat longer than the 4/4 your body expects, giving the groove a slightly lurching, off-balance feel that mirrors the song's sneering tone perfectly — money makes the world go round, but this version of "round" doesn't quite complete its circle the way it should. The song then relaxes into straight 4/4 for the extended saxophone and guitar solo section, as if the greed-fueled anxiety of the verses briefly runs out of things to say.

Concept as construction method

What separates "Money" from a novelty sound effect is how seriously the band treated the found-sound loop as a compositional element rather than an intro gimmick to be abandoned once real instruments arrive — the loop continues, buried in the mix, underneath the verses, holding the groove's rhythmic identity in place even as guitar and bass carry the melodic weight. It's conceptual songwriting married to hands-on tape editing: the thesis of the song (money as a mechanical, repetitive, slightly absurd ritual) is literally built into its rhythm section, rather than just described in the lyric. Few songs make their theme this physically audible.

How it’s done

Building a found-sound rhythm section, adapted for a modern session:

SOURCE SOUNDS: record (or source) individual, high-quality one-shot sounds related to your song's theme — mechanical, domestic, or environmental sounds work best when they have a clear percussive transient SEQUENCING: arrange the sounds on a grid like a drum pattern — assign each sound a specific beat/subdivision rather than layering them freely; the goal is a sound effect doing a DRUM'S job, on a DRUM'S schedule LOOP LENGTH: keep the pattern short (1–2 bars) and let it repeat continuously under the song, not just as a cold open — a found-sound loop used only as an intro is decoration; used as a recurring bed, it's a rhythm section ODD METER, USED SPARINGLY: if a riff wants to sit in 5/4 or 7/4 for a section, let it — but consider resolving to straight time for a contrasting section (solo, bridge) so the irregularity reads as INTENTIONAL tension rather than confusing the listener throughout

The technique asks something uncomfortable of a producer used to reaching for sample packs: go record the actual thing. A generic "cash register" sample rarely has the specific, room-flavored character of a sound captured on purpose, for this song, by someone who knew exactly what mood they needed it to carry.

What the ritual proved

The Dark Side of the Moon became one of the best-selling albums ever made, and "Money" is routinely cited as proof that a rock band could build a genuinely strange piece of sound design — an odd time signature, a non-musical rhythm loop, an extended instrumental midsection — and still land a hit. The lesson underneath the loop is a familiar one by this point in the library: the concept and the construction method should be the same idea, viewed from two angles. When they are, a listener feels the theme before they've processed a single lyric.

The Moment

Waters records coins, torn paper, and a cash register — and the sound effects become the drummer.

Sources & further listening

  1. Alan Parsons' engineering interviews on the "Money" tape-loop construction at Abbey Road.
  2. Roger Waters' interviews on writing and assembling the cash-register sound effects.
  3. Core listening: "Money," the rest of The Dark Side of the Moon.