Syd Barrett-led era -LRB- NUMBER@1 -- NUMBER@2 -RRB- The heavily jazz-oriented PERSON@1 left in NUMBER@1 after recording only a demo , leaving a stable lineup : PERSON@2 on guitar and most of the lead vocals , Waters on bass guitar and vocals , PERSON@3 on drums and percussion , and PERSON@4 on keyboards and vocals .

The other people in the band were PERSON@5 -LRB- bass guitar and vocals -RRB- , PERSON@6 -LRB- lead guitar and vocals -RRB- , PERSON@7 -LRB- keyboard and vocals -RRB- , and PERSON@8 -LRB- drums -RRB- .
