Pentatonix Make Counting To Five Sound Beautiful On ‘Sesame Street': VIDEO

Pentatonix street

Your favorite a cappella group is back and better than ever.

That's right, Pentatonix, the famous fivesome who won NBC's "The Sing-Off," will appear on Sesame Street February 7th to help teach kids about the magic of numbers. And as a special treat, a couple members of the group (namely their bass and beat boxer) who rarely get to sing out above the higher-pitched voices have their own solos. Counting has never sounded more beautiful! 

Check out their numerical stylings, and a bonus rendition of "Sesame Street" classics, AFTER THE JUMP...