Viral Video: Pentatonix's "Little Drummer Boy"The Arlington group Pentatonix is famous for their incredible a cappella performances. Now, the group is getting into the holiday spirit, performing "Little Drummer Boy."
Viral Video: Pentatonix Covers "Royals"A brilliant performance from Arlington's super-group Pentatonix, as they cover Lordes new single 'Royals'.

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