Just jumped on his site and there are many more videos where that came from...
[Since 1999, Alexis Malbert (aka Tapetronic) distracts (magnetics), recycles (plastics) and transforms (mechanics) audio cassettes and tape recorders to make machines to play music. Inventor, among other things, the Scratchette (it Scratch the cassette !), or the Vibro-K7, the Audio-Skate, the Wheeling Walkmen, it acts directly on mechanical devices to produce curious and dynamic music where the gestual is a source of energy.]