Albert Petrak was asked by a correspondent about Bellaphon and Dolphin
piano rolls.  There is a German record company called Bellaphon, and
they have issued classical piano-roll CDs under license from a company
called Dolphin Music Group.  See this item from the MMD archives:

  http://mmd.foxtail.com/archives/Digests/199605/1996.05.14.01.html

I don't know if these CDs are still available; Bellaphon is not a label
I see often in US shops.

Best,
Russell W. Miller