PINK FLOYD THE DARK SIDE OF THE MOON 1973 GATEFOLD HARVEST RECORDS VINYL LP---The Dark Side of the Moon is the eighth studio album by the English progressive rock band Pin Floyd , released on 1 March 1973. It built on ideas explored in the band's earlier recordings and live shows, but lacks the extended instrumental excursions that characterised their work following the departure in 1968 of founder member, principal composer, and lyricist, Syd Barett. The themes on The Dark Side of the Moon include conflict, greed, the passage of time, and mental illness, the latter partly inspired by Barrett's deteriorating mental state.IT remained in the charts for 741 weeks from 1973 to 1988. With an estimated 50 million copies sold, it is Pink Floyd's most commercially successful album and one of the Best selling albums of all time world wide.