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 was recorded at Abbey Road Studios, in two sessions, between May 1972 and January 1973. The band were assigned staff engineer Alan Parsons, who had worked as assistant tape operator on Atom Heart Mother, and who had also gained experience as a recording engineer on the Beatles' Abbey Road and Let It Be. The recording sessions made use of some of the most advanced studio techniques of the time; the studio was capable of 16-track mixes, which offered a greater degree of flexibility than the eight- or four-track mixes they had previously used, although the band often used so many tracks that to make more space available second-generation copies were made.  Beginning on 1 June, the first track to be recorded was "Us and Them", followed six days later by "Money". Waters had created effects loops from recordings of various money-related objects, including coins thrown into a food-mixing bowl taken from his wife's pottery studio, and these were later re-recorded to take advantage of the band's decision to record a quadraphonic mix of the album (Parsons has since expressed dissatisfaction with the result of this mix, attributed to a lack of time and the paucity of available multi-track tape recorders). "Time" and "The Great Gig in the Sky" were the next pieces to be recorded, followed by a two-month break, during which the band spent time with their families and prepared for an upcoming tour of the US. The recording sessions suffered regular interruptions; Waters, a supporter of Arsenal F.C., would often break to see his team compete, and the band would occasionally stop work to watch Monty Python's Flying Circus on the television, leaving Parsons to work on material recorded up to that point. Gilmour has, however, disputed this claim; in an interview in 2003 he said: "We would sometimes watch them but when we were on a roll, we would get on."  Returning from the US in January 1973, they recorded "Brain Damage", "Eclipse", "Any Colour You Like" and "On the Run", while fine-tuning the work they had already laid down in the previous sessions. A foursome of female vocalists was assembled to sing on "Brain Damage", "Eclipse" and "Time", and saxophonist Dick Parry was booked to play on "Us and Them" and "Money". With director Adrian Maben, the band also filmed studio footage for Pink Floyd: Live at Pompeii. Once the recording sessions were complete, the band began a tour of Europe.  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.  The album was originally released in a gatefold LP sleeve designed by Hipgnosis and George Hardie. Hipgnosis had designed several of the band's previous albums, with controversial results; EMI had reacted with confusion when faced with the cover designs for Atom Heart Mother and Obscured by Clouds, as they had expected to see traditional designs which included lettering and words. Designers Storm Thorgerson and Aubrey Powell were able to ignore such criticism as they were employed by the band. For The Dark Side of the Moon, Richard Wright instructed them to come up with something "smarter, neater - more classy". The prism design was inspired by a photograph that Thorgerson had seen during a brainstorming session with Powell.  The artwork was created by their associate, George Hardie. Hipgnosis offered the band a choice of seven designs, but all four members agreed that the prism was by far the best. The final design depicts a glass prism dispersing light into colour. The design represents three elements: the band's stage lighting, the album lyrics, and Wright's request for a "simple and bold" design. The spectrum of light continues through to the gatefold - an idea that Waters came up with. Added shortly afterwards, the gatefold design also includes a visual representation of the heartbeat sound used throughout the album, and the back of the album cover contains Thorgerson's suggestion of another prism recombining the spectrum of light, facilitating interesting layouts of the sleeve in record shops. The light band emanating from the prism on the album cover has six colours, missing indigo compared to the traditional division of the spectrum into red, orange, yellow, green, blue, indigo and violet. Inside the sleeve were two posters and two pyramid-themed stickers. One poster bore pictures of the band in concert, overlaid with scattered letters to form PINK FLOYD, and the other an infrared photograph of the Great Pyramids of Giza, created by Powell and Thorgerson.  Since the departure of founder member Barrett in 1968, the burden of lyrical composition had fallen mostly on Waters. He is therefore credited as the author of the album's lyrics, making The Dark Side of the Moon the first of five consecutive Pink Floyd albums with lyrics credited to him alone. The band were so confident of the quality of the words that, for the first time, they printed them on the album's sleeve. "Roger's concerns in it are not out of date," remarked Gilmour on the album's twentieth anniversary. "He did a fantastic job with those words. Then, Roger was always more verbal than the rest of us, who had no great confidence in our lyric-writing. Probably, in hindsight, we should have stuck at it: the roots of our problems were being set back then. But we all got the credit and money that we were happy with."

how did other people react?
Designers Storm Thorgerson and Aubrey Powell were able to ignore such criticism as they were employed by the band.