Just mess around with your keyboard and listen to the music. :) If you want to play something specific, here are the notes: c key plays the note c d key plays the note d e key plays the note e f key plays the note f g key plays the note g a key plays the note a b key plays the note b
Feel free to remix and make an even cooler project. :) I made this in music class and it is really basic. You could also use this to attach to a makey makey (if you know what that is)