Cast
Helene Fischer
Self
Howard Carpendale
Self
Nick Carter
Self
Bülent Ceylan
Self
Engelbert Humperdinck
Self
Mark Forster
Self
Andreas Gabalier
Self
Thomas Gottschalk
Self
Josh Groban
Self
Martina Hill
Self
Self
Self
Self
Self
Self
Self
Self
Self
Self
Self
