Unbreakable is a German hard rock band produced by Scorpions' Herman Rarebell. An interesting little thought is this: The Scorpions had an album called "Unbreakable" and maybe Rarebell hears some early Scorpions with these youngsters. The vocals on 'Knockout' are eerily similar to Scorpions frontman Klaus Meine crossed with Europe's Joey Tempest. The Germans fit the mold of today's European hard rock acts with a polished delivery and catchy melody. With riffs and hooks galore this is well worth a listen if you can get past the lyrical inefficiency.