


The sleeve, which depicts a prism spectrum, was designed by Storm Thorgerson in response to keyboardist Richard Wright's request for a "simple and bold" design which would represent the band's lighting and the album's themes. Snippets from interviews with the band's road crew are featured alongside philosophical quotations. The Dark Side of the Moon explores themes such as conflict, greed, time, death and mental illness. Engineer Alan Parsons was responsible for many of the sonic aspects and the recruitment of singer Clare Torry, who appears on " The Great Gig in the Sky". The group employed multitrack recording, tape loops, and analogue synthesisers, including experimentation with the EMS VCS 3 and a Synthi A. The record builds on ideas explored in Pink Floyd's earlier recordings and performances, while omitting the extended instrumentals that characterised the band's earlier work. New material was recorded in two sessions in 19 at EMI Studios (now Abbey Road Studios) in London. The record was conceived as a concept album that would focus on the pressures faced by the band during their arduous lifestyle, and partly deal with the apparent mental health problems of former band member Syd Barrett, who departed the group in 1968. The album was primarily developed during live performances, and the band premiered an early version of the suite several months before recording began. The Dark Side of the Moon is the eighth studio album by the English rock band Pink Floyd, released on 1 March 1973 by Harvest Records.
