Mark Forster
Appearance
Mark Ćwiertnia (born 11 January 1983 in Kaiserslautern), known professionally as Mark Forster, is a German singer. He is known for his singles "Au revoir" with Sido, "Chöre" and "Übermorgen". He is the coach of The Voice of Germany between 2017 and 2022. Forster is of Polish descent.