Pink Floyd were founded in 1965 by students Syd Barrett on guitar and lead vocals, Nick Mason on drums, Roger Waters on bass and vocals, and Richard Wright on keyboards and vocals. They gained popularity performing in London's underground music scene during the late 1960s, and under Barrett's leadership released two charting singles and a successful debut album, The Piper at the Gates of Dawn (1967). Guitarist David Gilmour joined in December 1967; Barrett left in April 1968 due to deteriorating mental health. Waters became the band's primary lyricist and conceptual leader, devising the concepts behind their albums The Dark Side of the Moon (1973), Wish You Were Here (1975), Animals (1977), The Wall (1979) and The Final Cut (1983). The Dark Side of the Moon and The Wall became two of the best-selling albums of all time.
Following creative tensions, Wright left Pink Floyd in 1979, followed by Waters in 1985. Gilmour and Mason continued as Pink Floyd; Wright rejoined them as a session musician and, later, a band member. The three produced two more albums, A Momentary Lapse of Reason (1987) and The Division Bell (1994), and toured until 1994. After nearly two decades of acrimony, Pink Floyd reunited with Waters in 2005 for a performance in London as part of the global awareness event Live 8, but Gilmour and Waters have since stated they have no plans to reunite as a band again. Barrett died in 2006 and Wright in 2008. The final Pink Floyd studio album, The Endless River (2014), was recorded without Waters and largely based on unreleased material.
Pink Floyd were inducted into the American Rock and Roll Hall of Fame in 1996, and the UK Music Hall of Fame in 2005. By 2013, the band had sold more than 250 million records worldwide, including 75 million certified units in the US.
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