Guitar Player is a program that simulates a guitar using the Karplus-Strong algorithm. To play the guitar run java GuitarHeroLite, and use the "a" and "c" keys to play.
Alternatively you can also run java GuitarHero to play all 37 notes. Use any of the keys in "q2we4r5ty7u8i9op-[=zxdcfvgbnjmk,.;/' to play.