Using a USB to PS2 controller converter, a couple programs, and a PS2 as a makeshift foot pedal, Jason has fashioned an entirely new beast. He writes, "... this new nerdstrument has distanced itself from a guitar. Strumming is not used to generate tones -- fret button presses do this. The strum bar is instead used to change octaves. The controller's start and select buttons are mapped to cycle through instrument voices. " It's seems more like a keytar in this capacity.
A warning to prospective jammers: this will remove the illusion that you're a rock god. Jason laments, "It's kind of humbling to go from playing Helmet's 'Unsung' at Guitar Hero's expert level to playing 'Twinkle, Twinkle, Little Star', you know?"