A hugely successful a cappella outfit, the ten-member all-male ensemble Straight No Chaser are known for their inspired vocal reworkings of pop songs and holiday favorites. Formed at Indiana University, Straight No Chaser were relatively obscure when they were discovered after a YouTube clip of the band singing "The 12 Days of Christmas" went viral in 2007. The group signed a record deal and released several well-received albums including 2008's Holiday Spirits, 2010's With a Twist, and 2013's Under the Influence, the latter of which featured guests like Dolly Parton and Jason...