This project by Kouichi Okamoto is awesome! 504 musical box movements which each play only a single note:

The musical table installed 504 volumes on the top plate,
and there are 504 musical box movements which play only a single sound
in the point of the 5-m electric line extended from there.

The motor revolving speed of the musical boxes are adjusted by the volume of
the table, and the musical boxes play sound at random.

Enjoy