The Soundtrack Album
As album sales continue to disappoint, soundtracks remain a bright spot. Boosted by the unstoppable "Let It Go" juggernaut — and the accompanying movie, which made $1.3 billion worldwide — the Frozen soundtrack spent 13 weeks at No. 1 over the course of four months. (More than a year after its release, it's still in the Top 10.) Then this summer, Guardians of the Galaxy: Awesome Mix Vol. 1 topped the charts for a couple weeks, introducing old hits from the likes of 10cc and Elvin Bishop to a new generation of Marvel and sci-fi kids.