Play some electric piano with the arrow keys, or your Makey Makey. I recorded myself playing individual notes and chords on my vintage fender rhodes electric piano, directly into the scratch sound editor. All the sounds are in a C minor scale. The up arrow chooses a random chord, the right arrow is a random high note, and the left arrow is a random short chord. The down arrow plays a sequence of low notes, as a bass line. Click "drum loop" for some drums to jam along with.