Physical Graffiti is the sixth studio album by the English rock band Led Zeppelin. Released as a double album on 24 February 1975 in the United States and on 28 February 1975 in the United Kingdom, it was the group's first album to be released under their new label, Swan Song Records. The band wrote and recorded eight new songs for the album in early 1974 at Headley Grange, a country house in Hampshire, which gave them ample time to improvise arrangements and experiment with recording. The total playing time covered just under three sides of an LP, so they decided to expand it into a double album by including previously unreleased tracks from the sessions for the band's earlier albums Led Zeppelin III (1970), Led Zeppelin IV (1971) and Houses of the Holy (1973). The album covered a range of styles including hard rock, progressive rock, rock 'n' roll and folk. The album was then mixed over summer 1974 and planned for an end-of-year release; however, its release was delayed because the Peter Corriston-designed die-cut album cover proved difficult to manufacture.
Physical Graffiti was commercially and critically successful upon its release and debuted at number one on album charts in the UK and number three in the United States. It was promoted by a successful U.S. tour and a five-night residency at Earl's Court, London. The album has been reissued on CD several times, including an expansive 40th anniversary edition in 2015. Physical Graffiti was later certified 16× platinum in the United States by the Recording Industry Association of America (RIAA) in 2006, signifying shipments of over eight million copies in the US. (Full article...)