Question: Who sang vocals on wish you were here?
Answer: David Gilmour
Disambiguated annotations:
qaPairs: question: Who sang vocals on the original "Wish You Were Here" single?
answer: David Gilmour
question: Who sang vocals on the album "Wish You Were Here"?
answer: Roy Harper
question: Who tried to sing vocals on the album "Wish You Were Here"?
answer: Roger Waters