In the 20.06.26 MMD John Bartlett asks about the mechanism of the
Tanzbaer accordion and how it operates.  There are German documents
that answer John's questions.  Here is one:

https://antiques.bayern/zuleger_tanzbaer_1.html  

The text is all in German, but beginning on that page you may get some
information in the other chapters and from its photos about Tanzbaeren.
You will find a full article about Tanzbaeren here:

https://www.musica-mechanica.de/media/PDF/Tanzbaer.pdf 

This article was translated and published in English by MBSG in their
journal "The Music Box," v. 29, no. 1 (Spring 2019).

Regards,
Uwe Gernert
Lengenfeld, Germany

 [ Sound file at https://antiques.bayern/la_mere.mp3  -- Robbie