Pentatonix - Underdog Champions of the Music Industry?
In the world of popular music, it's common to hear names such as Taylor Swift, Beyonce, Sam Smith, and Adele. Other artists like Justin Beiber, Usher, Kanye West, and others emerge on the scene and vie for chart supremacy. However, one thing that is uncommon to hear in mainstream popular music is A CAPELLA...at least until now. In 2011, five self-described "music nerds" entered Season 3 of NBC's the Sing-Off (think American Idol for A Cappella groups) under the name of "Penta