Dug North sent word of this interesting weight-driven music box –
“Andante Grazioso” (Wolfgang Amadeus Mozart / KV331) played by a “Mechanical Music Box in a Drawer” made from recycling materials found in electronic-waste, bulky trash and at home.
That can must be somewhat thick in order achieve such a bell-like tone – an impressive performance for a few pieces of garbage. – Mozart from Scrap-Made Mechanical Glockenspiel
Make your own mechanical music box