Additional personnel: Clare Torry (vocals); Dick Parry (saxophone); Doris Troy, Lesley Duncan, Liza Strike, Barry St. John (background vocals).

By condensing the sonic explorations of Meddle to actual songs and adding a lush, immaculate production to their trippiest instrumental sections, Pink Floyd inadvertently designed their commercial breakthrough with Dark Side of the Moon. The primary revelation of Dark Side of the Moon is what a little focus does for the band. Roger Waters wrote a series of songs about mundane, everyday details which aren't that impressive by themselves, but when given the sonic backdrop of Floyd's slow, atmospheric soundscapes and carefully placed sound effects, they achieve an emotional resonance. But what gives the album true power is the subtly textured music, which evolves from ponderous, neo-psychedelic art rock to jazz fusion and blues-rock before turning back to psychedelia. It's dense with detail, but leisurely paced, creating its own dark, haunting world. Pink Floyd may have better albums than Dark Side of the Moon, but no other record defines them quite as well as this one. ~ Stephen Thomas Erlewine

DARK SIDE OF THE MOON was a benchmark record. It turned the musical world on its ear with a hitherto unseen combination of sounds, and changed things considerably for Pink Floyd. For this project, Pink Floyd resurrected older and unfinished numbers, some of which came from the multitude of soundtracks the band members had previously worked on. The film ZABRISKIE POINT, a study of American materialism from a foreigner's perspective, provided "Us and Them" (originally titled "The Violence Sequence"). Waters rewrote "Breathe" after its appearance on his and avant-garde composer Ron Geesin's score for THE BODY, a surreal medical documentary.

Floyd and their long-time engineer, Alan Parsons, used a multitude of sound effects--from stereophonically projected footsteps and planes flying overhead ("On the Run") to a roomful of ringing clocks ("Time"). Further adding to the record's mystique, barely audible spoken passages were sprinkled throughout--a result of hours interviewing random Abbey Road occupants about their views on insanity, violence, and death. Floyd must have struck a nerve: DARK SIDE OF THE MOON remained on Billboard's albums chart for an astounding 14 years. It made Pink Floyd a household name, elevating them to the level of the Rolling Stones and The Who in the rock pantheon.