Pentatonix's That's Christmas to Me is the bestselling holiday album of the season. The title track on the album is an original Christmas song and ET got to spend an entire day -- and night -- with the group as they shot the video.
After winning NBC's The Sing-Off competition in 2011, Scott Hoying, Mitch Grassi, Kirstie Maldonado, Avi Kaplan and Kevin Olusola have been spending an immense amount of time recording in the studio and performing in arenas. With all that time together, ET's Brooke Anderson was curious if they ever got into tiffs.
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"Absolutely," Hoying said when asked if they ever got annoyed with each other. "It's like a family. Like when you bicker with your sister. It's the same thing."
Hoying went on to reveal that because they've learned when to walk away, none of their disagreements end in big blowups.
One thing they all seemed to agree on was their favorite song off their popular holiday album.
"My personal favorite is 'That's Christmas to Me'," said Olusola, receiving nods from the rest of the group. "I think it's very personal to us. The feeling of nostalgia of what Christmas means is so inherent in the song."
But this day was all about the group's title track for their No. Album on the Billboard 200, "That's Christmas To Me," as they shot the video at YouTube Space L.A. Afterwards, they headed to another concert at the Roxy in Hollywood.
Things just keep getting better for the group. After our day with them, they received their first GRAMMY nomination for Best Arrangement, Instrumental or A Capella for their Daft Punk melody. Watch the video for more!