Corrected entry: As a professional synthesizer, the Yamaha DX7 did not have any accompaniment and rhythm components as utilized by the President when greeting the robot. None of the DX-series had anything like that. This was "incorrectly corrected."
Watchful
22nd Nov 2009
Correction: We're talking about a keyboard intended to communicate with alien species, so modification is almost certain. For all we know, ALL of the electronics in the keyboard were replaced or modified.