I can start a Drum track on the computer, start chords that I made, and then control piano sounds with the slide sensor. I can also adjust brightness and three colors of an LED light.
I made it by connecting lights and the four sensors (three pressure, one slide) to a redboard and using the scratch four program to control the connections and add drum and chord sounds.
I made it at the ICAT center Make to Learn workshop in Blacksburg.
I learned some basic programming and electrical concepts, some of how to use an Arduino and e Scratch Four program, and a little more about rhythms and music.