Watch a demo of them all in action below.

Alexis Malbert, aka Tapetronic, is a French musician with a collection of unique instruments at his disposal built primarily out of old cassette tapes. Working with cassettes since the 90s, Malbert cuts away unnecessary parts and adds pieces like mini-motors to make his gorgeous handheld inventions. They seem as fun to play as they are to watch in action. Take a look at some of them below and head to his website to see more.