The German legend that is Tobias Sammet (also of Edguy) is back with his supergroup Metal Opera, Avantasia. Two years in the making, ‘Moonglow’ gets the honour of being Avantasia’s 8th album release – not bad for something that was just supposed to be a once-in-a-lifetime studio project back in 2001. Like its predecessor, ‘Ghostlights’,…