Hi all,  Yes a phonograph is mechanical music: you wind it and the
turntable revolves.  (corny ?)

Several companies made attachment reproducers (sound boxes) that could
be used on the Edison Diamond Disc tone arm.  In 1927 Thomas Edison's
son, Theodore Edison, came out with Edisonic phonograph, I believe in
competition with Victor Orthophonic and also to try and help the
failing phonograph company.

In 1928 Edison made a reproducer for the Edisonic that what we now
call 78s.  They were supplied with the new machines.  For more info you
can check George L. Frow's book The Edison Disc Phonographs and the
Diamond Discs.  On page 176-177 are the Edisonic machines and on page
184 are pictures of the reproducers, less the connection linkage that
hooks to tone arm.

I have the Schubert model Edisonic and also the reproducer for 78s.
If you have any questions maybe I can help.

Blaine Warner