Helloween – Power Piano Cover [Synthesia Piano Tutorial] Jul 13, 2016 Cover, Cover Heavy Metal, Cover Helloween, Cover Metal, Cover Power, Graspop Metal Meeting 6-26-06, The Time of the Oath, Like 0 Thanks! You've already liked this « OLYMPO – Ride the Sky (Helloween cover) – 1 Jul 2016 » Helloween – Still We Go Piano Cover [Synthesia Piano Tutorial]