Pentatonix Sings 'Joy to the World' At Rockefeller Center Tree Lighting

A cappella superstars Pentatonix spread their special brand of joy at this year's annual tree lighting ceremony at Rockefeller Center in midtown Manhattan on Wednesday night.

The Grammy Award-winning group, whose members include out singers Mitch Grassi and Scott Hoying, treated the crowd to their jubilant rendition of "Joy to the World."

Watch Pentatonix perform the song below, and if you like what you hear, check out the act's 2014 holiday album That's Christmas to Me:

[youtube https://www.youtube.com/embed/G1Br56ksa4Y?rel=0&controls=0&showinfo=0 expand=1 site_id=25879312]