It's time to get dirty — old school dirty, that is. Formed in 1977, Dirty Dozen Brass Band is widely lauded for introducing nontraditional sounds — namely funk and R&B — into New Orleans' jazz scene. Not only has the ensemble released over a dozen albums, but it has collaborated with the likes of Elvis Costello and Modest Mouse. It's most recent album, 2012's Twenty Dozen — its first new album in over six years — opens with "Tomorrow," an upbeat, organ-heavy track with a reggae slant. But the band's New Orleans roots are still present, like in its horn-filled spin on "When The Saints Go Marching In." Oh, and the band also covered Rihanna's "Don't Stop the Music," shifting the original club tune into a jazz affair riddled with sax and trumpet solos and backed by sweeping ensemble melodies. After 40 years, Dirty Dozen is still innovating and hitting those high notes.