The Yamaha DX-7
Yes, that notorious black FM bastard makes a predominant apperance here, along with it's nefarious cohorts: The EMU Emulator II, The Simmons SSDV, and what sounds like the EMU Mirage may even be present.
This whole movie uses their signature sounds to nauseating effect; there are tinkly Rhodes pianos, shakhuchis up the wazoo, and robot fart drums that make your skull reverberate.
Pretty damn good, I'd say.