POWERWOLF is gradually introducing guests who have taken part in the recording of bonus material for the new album “Call Of The Wild”, which is scheduled for release on the ninth of July on Napalm Records. At the moment, it is known that Alissa White-Gluz, Jari Mäenpää, Ralf Scheepers, Björn “Speed” Stri, Chris Harms, Doro, Matthew kiichichaos Heafy, Johannes Eckerström and Johan Hegg participated in the work.
