Kai Hansen
Unisonic is a German hard rock/power metal supergroup, founded on 10 November 2009 by Helloween singer Michael Kiske alongside Dennis Ward and Kosta Zafiriou from Pink Cream 69 and Mandy Meyer, formerly in Asia and Gotthard. In 2011 the band was joined by Gamma Ray leader and Helloween co-founder, Kai Hansen.