Those wonderful demo songs... also, my current collection

YouTube via frostedminipete
"* = circuit bent [at time of upload, not filming]
** = will be circuit bent [at time of upload, not filming]
Casio PT-1
Casio PT-10*
Casio PT-50
Casio PT-80
Casio PT-100 x2*
Casio MT-55*
Casio MT-205*
Casio SK-1
Casio SA-8*
Casio SA-2*
Yamaha QY-100 midi sequencer
Yamaha PSS-80 **
Yamaha PS-200 *
Yamaha PSR-77
Speak & Read *
Speak & Spell *
Speak & Math **
Hing Hon EK-001 x3* *
Geosafari traveller *
Wuv luv toy *
Discovery Kids drum pads *
Magnus Chord organ
Mini kids keyboards
E-mu Xboard 49 midi controller
Toy electronic guitar **"