Pentatonix

Genre:A cappella, pop music, contemporary R&B, soul music, and Christmas music

Most famous songs:"Hallelujah", "Mary, Did You Know?", "Can't Sleep Love"

Pentatonix became famous after winning a NBC reality show in 2011.

Suggested by Scott Hoying, Pentatonix is named after the pentatonic scale representing the five members of the group, but replaced the "c" in pentatonic with "x".

Pentatonix's Christas album, "That's Christmas to Me" is the best charting group holiday album since 1962.