Kelly Clarkson crashes the a cappella party and nobody's mad about it.
Celebrating the holiday season with a one-hour television event where viewers can enjoy the Grammy Award-winning musical phenomenon Pentatonix performing an array of classic holiday tracks as well as modern favorites.
Acting
Kelly Clarkson being effortlessly charming in her guest spot.
Sound
Kevin's beatboxing still defies physics and logic.
Director
Joe DeMaio
Trivia, insights & behind the scenes
This aired during Pentatonix's absolute peak — their self-titled album had just gone platinum and they were everywhere from SNL to the Macy's parade.
Avi Kaplan announced his departure from the group mere months after this special aired, making this his swan song as the original bass.
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