Original: Syd Barrett-led era ( 1965 -- 1967 ) The heavily jazz-oriented Klose left in 1965 after recording only a demo , leaving a stable lineup : Barrett on guitar and most of the lead vocals , Waters on bass guitar and vocals , Mason on drums and percussion , and Wright on keyboards and vocals .
Simplified: The other people in the band were Roger Waters ( bass guitar and vocals ) , David Gilmour ( lead guitar and vocals ) , Richard Wright ( keyboard and vocals ) , and Nick Mason ( drums ) .