Add Yahoo as a preferred source to see more of our stories on Google. The 'Ryan's World the Movie: Titan Universe Adventure' soundtrack will drop on Aug. 16 Pentatonix is rolling in with a new cover.

Pentatonix, an American a capella group known for their covers of pop songs and holiday classics, was formed in 2011 after a successful run on TV singing competition series “The Sing-Off.” Pentatonix ...