Pentatonix also put out a deluxe edition of that album in October, which includes the rendition of “Joy to the World” heard at the tree-lighting ceremony. Pentatonix Scores First No. 1 Album ...

Welcome to E!'s Backstage Pass. The best way to spread holiday cheer may just be singing Pentatonix loud for all to hear. "It's one of our biggest shows we've ever done," Scott teased to E!

Pentatonix, made up in part of Kirstin Maldonado and Kevin Olusola, is the world's most famous a cappella group.(Carly Geraci / Staff Photographer) The bubbly stars of Pentatonix use only their ...

Once again, Pentatonix is excellent on their cover of the holiday classic “Joy To The World.” They are one group that music critics simply cannot criticize. All they can do is be in awe of ...

3 Video: Go Inside the Starry NYC Premiere of THEATER CAMP 4 Video: The Teen Critics Take a Trip to Theater Camp Pentatonix brought ... of the holiday classic "Joy to the World." ...

RELATED: 'A Pentatonix Christmas Special' preview: See group perform 'Joy To The World' So settle in with a cup of warm cider for Pentatonix-palooza! We know it'll keep you in tune for the whole day.

Pentatonix bundle up in their winter coats ... and Kevin Olusola — performed “Joy To The World” at the event. This is PTX’s third time at the annual ceremony. Later on, Andy Grammer ...