Of Monsters and Men's breakout year continues -- and if you don't believe 2012 is the year of OMAM, check out their new 'Mountain Sound' video, which features the band performing live in front of the kind of massive crowd it's attracting more and more when playing live.

Filmed during a gig in their hometown of Reykjavik, Iceland, the clip shows the band performing on a fog-clouded outdoor stage, hanging out backstage and chilling with their fans. 'Mountain Sound' follows the crossover hit 'Little Talks' as the latest single off their debut album, 'My Head Is an Animal,' which dropped in April.