<Ul> <Li> David Gilmour </Li> <Li> Roger Waters </Li> </Ul> <Tr> <Th> Producer (s) </Th> <Td> Pink Floyd </Td> </Tr> <P> "Wish You Were Here" is the title track on Pink Floyd's 1975 album Wish You Were Here . Like most of the album, it refers to former Pink Floyd member Syd Barrett and his breakdown . David Gilmour and Roger Waters collaborated to write the music, and Gilmour sang the lead vocal . </P> <P> In 2011, the song was ranked No. 324 on Rolling Stone's list of the 500 Greatest Songs of All Time . </P>

Who sang vocals on wish you were here