LONDON — Pink Floyd, the British progressive rock group whose "Dark Side of the Moon" is one of the best-selling records of all time, has announced its first new studio album in 20 years will be released on November 11. "The Endless River" is a tribute to Rick Wright, the band's keyboardist who died in 2008, the band said on its website. The album is primarily made up of music that Wright, guitarist David Gilmour and drummer Nick Mason put together during a session in 1993 that led to the last studio album, 1994's "The Division Bell". It is a primarily instrumental offering, with just one song.

Pink Floyd is one of the most successful bands in rock history. According to Billboard, its 1973 "Dark Side" album is estimated to have sold more than 45 million copies worldwide. Gilmour and Mason are the two remaining members of the band still working under the Pink Floyd name. Original member Roger Waters left in the 1980s for a solo career. The fifth member, Syd Barrett, died in 2006. He left the group in 1968 suffering from what is widely believed to be drug-induced mental illness.

Pink Floyd (from left: David Gilmour, Roger Waters, Nick Mason and Richard Wright) taking a bow at the Live 8 concert in Hyde Park, London, in 2005. JOHN D MCHUGH / AFP - Getty Images, file

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- Reuters