7 Sinners

Helloween have always shown an interest in numerology, or at least the number seven, specifically, which they've incorporated in no less than three Keeper of the Seven Keys-related studio albums, and now, on their thirteenth career full-length, 7 Sinners (incidentally marking the band's 25th anniversary), they made sure to include precisely 13 songs, except, no doubt, in Japan, where the mandatory bonus track will trump any numerological strategy.

Helloween - 7 Sinners review: Power metal that is actually pretty rad. In 2010, no less!