During the Brain Salad Surgery tour of 1974, Emerson's keyboard setup included the Hammond C-3 organ, run through multiple Leslie speakers driven by HiWatt guitar amplifiers, the Moog 3C modular synthesiser (modified by addition of various modules and an oscilloscope) with ribbon controller, a Steinway concert grand piano with a Minimoog synthesiser on top of it, an upright acoustic-electric piano that was used for honky-tonk piano sounds, a Hohner Clavinet and another Minimoog synthesiser. Emerson also used a prototype polyphonic synthesiser produced by Moog, which was the test bed for the Moog Polymoog polyphonic synthesiser. The original synthesiser setup as envisioned by Moog was called the Constellation, and consisted of three instruments – the polyphonic synthesiser, called the Apollo, a monophonic lead synthesiser called the Lyra, and a bass-pedal synthesiser, called the Taurus, but Emerson never used the Taurus.
during the brain salad surgery tour of 1974 emerson's keyboard setup included the hammond c-3 organ run through multiple leslie speakers driven by hiwatt guitar amplifiers the moog 3c modular synthesiser (modified by addition of various modules and an oscilloscope) with ribbon controller a steinway concert grand piano with a minimoog synthesiser on top of it an upright acoustic-electric piano that was used for honky-tonk piano sounds a hohner clavinet and another minimoog synthesiser emerson also used a prototype polyphonic synthesiser produced by moog which was the test bed for the moog polymoog polyphonic synthesiser the original synthesiser setup as envisioned by moog was called the constellation and consisted of three instruments – the polyphonic synthesiser called the apollo a monophonic lead synthesiser called the lyra and a bass-pedal synthesiser called the taurus but emerson never used the taurus