Pentatonix Return To The Sing Off With Epic Holiday Medley—Watch Now!

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Pentatonix returned to their old roosting place on Wed. night (Dec. 17) for a powerful Christmas medley. Taking The Sing-Off stage, for the first time since their Season 3 win, the Grammy-nominated, gold-selling a capella pop group delivered a succinctly crafted performance, featuring cuts from their new That's Christmas To Me. Not only did the group showcase their talent with rhythm and ballads, but they proved their superstar-caliber power as they smoothly transitioned between each tune. As evidenced by the resulting standing ovation, they flew to the moon and back.

The holiday project, which features such classics as Hark! The Herald Angels Sing and Winter Wonderland, has proven to be a massive dark horse. After selling less than 40,000 copies first-week of release, it has gain significant momentum. On this week's Billboard sales report, the album shifted 218,000 units this week; if the pace keeps up, the quintet could achieve their first-ever platinum milestone.

[PHOTO CREDIT: Michael Loccisano/Getty // VIDEO CREDIT:]

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