Pentatonix’s Acapella Approach To Classic Christmas Songs [Videos]

Pentatonix, season three winners of NBC's television singing compettion, "The Sing-Off", bring new life to some older Christmas classics.  The group is comprised of Scott Hoying on lead vocals, Kirstie Maldonado on lead vocals, Mitch Grassi on lead vocals, Avi Kaplan on vocal bass, and Kevin “K.O.” Olusola on beat box.  Pentatonix has amazing harmonies and acapella talent.