From Verified Handles
Karsten Troyke (born Karsten Bertolt Sellhorn on 14 August 1960 in Berlin) is a German singer of Jewish songs, as well as an actor and speaker.
Troyke was born to a non-Jewish family, his father Werner "Josh" Sellhorn though had a paternal grandmother who was Jewish.Troyke worked in various jobs: as a gardener and with cognitively challenged children. from Wikipedia
These are provided for reference and have been verified to be accurate.