Premise: David Gilmour . 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: Pink Floyd has a member called David Gilmour.
Label: ENTAILMENT