[ Devon Hollingsworth wrote:

>> The discs have raised dots and dashes for the lengths of the notes,
>> so that the duration of the note is determined.  What's even weirder
>> is that it takes four "tracks" ...


I believe you're talking about the same "Player Piano" that I've had
for some twenty years.  I also have a Choo-Choo engine that works
identically.  There are four tune discs with each unit.  There are
eight tunes in total with two on each disc, one tune on each side of
the disc.

As a matter of fact I have my piano apart right now as the little drive
rubber belt got too loose to play properly.  Both of these unit have
been stored in the original boxes since I bought them new so I can't
explain why the rubber drive belt in the piano unit got the way it is.
The other one still plays like new.

Hal Davis