Premise: David Jon Gilmour , ( born 6 March 1946 ) is an English singer , songwriter , composer , multi-instrumentalist , and record producer . He joined the progressive rock band Pink Floyd as guitarist and co-lead vocalist in 1968 , effectively as a replacement for founder Syd Barrett , who left the band shortly afterwards . Pink Floyd . Guitarist and vocalist David Gilmour joined in December 1967 ; Barrett left in April 1968 due to deteriorating mental health . Gilmour and Mason continued as Pink Floyd ; Wright rejoined them as a session musician and , later , a band member .
Hypothesis: David Gilmour is a guitarist in Pink Floyd.
Label: ENTAILMENT