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One of the more underreported things in 1970s Pink Floyd history is the obvious existence of what I call the “Pink Floyd Vocal Transmogrifier,” a handy device that transforms the vocals of anybody who uses it into the lead singer of Pink Floyd.
This is why, to the casual listener, it’s nearly impossible to tell if it was Roger Waters or David Gilmour or even Richard Wright singing on any given Pink Floyd song. And so in 1975, unsatisfied with the lead vocals that both Gilmour and Waters tried to lay on top “Have a Cigar,” they turned to Roy Harper, who was also recording in Abbey Road at the time, and asked him to have a crack at it.