Much of Pentatonix's success is due to its modern takes on Christmas classics. Some of the group's most popular videos have been holiday-themed.
The album featured bass vocalist Matt Sallee in place of previous bass Avi Kaplan.
Kaplan left the group in May due to personal reasons. He explained that he could "no longer continue at this pace" and expressed desire to spend more time with friends and family. Kaplan's farewell video was posted on the Pentatonix Facebook page.
Another member of the group, Kirstin Maldonado, is reportedly working on her solo debut, according to Hugh McIntyre, a Forbes contributor. Other band members also are beginning attempts to pursue personal projects.
In case we may never see the original band back together, here's a list of the group's top 12 most-viewed Christmas videos on YouTube.
Check them out below.
'Little Drummer Boy'
Views: 154 million
Likes / Dislikes: 968,000 / 27,000
'Mary, Did You Know?'
Views: 152 million
Likes / Dislikes: 1,000,000 / 24,000
'Carol Of The Bells'
Views: 103 million
Likes / Dislikes: 800,000 / 18,000
'White Winter Hymnal'
Views: 59 million
Likes / Dislikes: 432,000 / 8,000
'Angels We Have Heard On High'
Views: 36 million
Likes / Dislikes: 233,000 / 5,000Comment on this story
'Winter Wonderland/Don't Worry Be Happy'
Views: 36 million
Likes / Dislikes: 312,000 / 5,000 K
'Dance Of The Sugar Plum Fairy'
Views: 35 million
Likes / Dislikes: 411,000 / 5,000
'That's Christmas To Me'
Views: 34 million
Likes / Dislikes: 258,000 / 3,000
'Silent Night (Live)'
Views: 27 million
Likes / Dislikes: 180,000 / 3,000
'God Rest Ye Merry Gentlemen'
Views: 25 million
Likes / Dislikes: 333,000 / 4,000
'The First Noel'
Views: 21 million
Likes / Dislikes: 203,000 / 3,000
'O Come All Ye Faithful'
Views: 14 million
Likes / Dislikes: 194,000 / 3,000