Emerson Lake And Palmer Brain Salad Surgery Released: 19 November 1973 Keith Emerson -- Hammond organs, piano, harpsichord, accordion, Moog Modular IIIc synthesiser, Moog Minimoog synthesiser Greg Lake -- vocals, six and twelve string acoustic & electric guitars, bass guitar Carl Palmer -- drums, percussion, gongs, timpani, percussion synthesisers (drum-based synthesiser triggers)