Premise: Pink Floyd were an English rock band formed in London . 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 . Syd Barrett . Barrett was excluded from Pink Floyd in April 1968 after David Gilmour took over as their new guitarist , and was briefly hospitalised amid speculation of mental illness . The Piper at the Gates of Dawn is the debut studio album by English rock band Pink Floyd , and the only one made under founding member Syd Barrett 's leadership .
Hypothesis: Syd Barrett is a founding member of the band Pink Floyd.
Label: ENTAILMENT