Foxtrot is the fourth studio album from the English rock band Genesis, released in October 1972 on Charisma Records. The album was recorded following the tour in support of their previous album, Nursery Cryme (1971). Side two features "Supper's Ready", a 23-minute track that is considered a key work in progressive rock and has been described by AllMusic as the band's "undisputed masterpiece". Foxtrot was the band's greatest commercial and critical success at the time of its release, reaching number 12 in the UK and receiving largely positive reviews. As with their previous two albums, Foxtrot initially failed to chart in the United States. A single from the album, "Watcher of the Skies", was released as a single in October 1972. Foxtrot was reissued with a new stereo and 5.1 surround sound mix as part of their 2008 Genesis 1970–1975 box set.