Richard Wright of Pink Floyd wrote a tune called "The Violent Sequence" for inclusion in the film. Antonioni rejected the song because it was too subdued and instead synchronized a re-recording of the band's "Careful with That Axe, Eugene", retitled "Come in Number 51, Your Time Is Up", with the film's violent ending scene. Roger Waters states in "Classic Albums - Pink Floyd - Making The Dark Side Of The Moon" that while he loved the song, Antonioni said it was "too sad" and that it reminded him of church. Eventually it was reworked into a new song known as "Us and Them", which was released on their album "The Dark Side of the Moon" in 1973. "The Violent Sequence" remained unreleased until it was included on a 2011 boxed set of "Dark Side of the Moon", where it was named "Us and them (Richard Wright Demo)".