It seems to me the 88-note push-up players would be more rare and
more practical for music that more people can relate to.  However,
I have a 65-noter I rebuilt and am adding MIDI-controlled valves to,
and a Yamaha MIDI keyboard for it to play.  The Yamaha YTP-310 I got
records MIDI files that are up-loadable to a computer.  (I haven't
got it all together and playing yet, though.)

Pin-end 58- and 65-note music rolls are usually not scanned but most
all are before the 1922 copyright date that roll scanners make public.

Robert Leber
Fremont, California