Wow, it looks like someone had to hook up all their old cellphones to an electric piano. Each key on the piano responds to a dial button on one of those phones, creating a dial-tone. Of course, there’s not enough dial-tones to cover all the notes.
The cell phone piano. Each key on the keyboard is wired into a key on a cell phone – as you play, you are also dialing. The channels are mixed together and amplified through speakers. Every sound the piano makes is generated by one of the four phones. The white keys play notes and the black keys are people saying the number out loud – English on the left hand and Spanish on the right. Some white keys were left over and I made those percussion instruments (the “*”, “END”, and “#” keys).