This link will hopefully take you to today's Instructables how-to
article which features the Sanyo 20-note manivelle movement.
They automated the punching mechanism using a reader and Arduino
microprocessor.

https://www.instructables.com/id/Making-Music-Box-Punch-Machine-With-Arduino/ 

I am sure this is of interest to some of the MMDers out there.
I think a lot of the Instructables folks are good candidates for
learning more about mechanical music!

Tom Detweiler
Grass Valley, California