..recently uploaded to YouTube. Can't find a commercial recording..
https://www.youtube.com/watch?v=u7BOO6NigbU (https://www.youtube.com/watch?v=u7BOO6NigbU)
A late work, it is included in this listing:
http://musikgeschichte-meiningen.de/pdf/Wilhelm_Berger_Notennachlass.pdf (http://musikgeschichte-meiningen.de/pdf/Wilhelm_Berger_Notennachlass.pdf)
Published:
https://vkjk.de/artikeldetails/kategorie/kammermusiknoten/artikel/wilhelm-berger-klavierquartett-c-moll-op-100.1647.html (https://vkjk.de/artikeldetails/kategorie/kammermusiknoten/artikel/wilhelm-berger-klavierquartett-c-moll-op-100.1647.html)