Pentatonix gets an early Christmas gift, as their album That’s Christmas To Me surpassed 1 million in total sales in the week ending Dec. 21. With another 203,000 sold, its cumulative total now stands at 1.02 million.

That’s Christmas To Me (released through RCA Records) is just the fourth album to sell a million copies in the U.S. in 2014, following the Frozen soundtrack (3.46 million), Taylor Swift’s 1989 (3.34 million) and Sam Smith’s In the Lonely Hour (1.13 million).

That’s Christmas To Me continues to be the a cappella group’s best selling effort, well ahead of PTXmas, which has moved 356,000.

Also of note: That’s Christmas To Me is the first holiday album to sell a million copies in a calendar year since 2011, when both Michael Buble’s Christmas and Justin Bieber’s Under the Mistletoe managed the feat (with 2.45 million and 1.25 million, respectively).