That's Christmas to Me is the third studio album by a cappella group Pentatonix. It is their sixth release overall and their second holiday release following their 2012 EP PTXmas. It only features previously unreleased material (except "Let It Go", a bonus track of the Japanese Edition of Vols. 1 & 2). It was released on October 21, 2014 through RCA Records, peaked at number 2 on the Billboard 200, and has been certified double platinum by the Recording Industry Association of America. The album is named after the eponymous song by Pentatonix, the only original song featured on the album. By year's end, December 31, 2014, according to Billboard, it reached a final 2014 total of 1.14 million copies sold, becoming the 4th best selling album of 2014 by any artist of any genre. The album is also the highest charting holiday album by a group since 1962. The album has sold 2,200,000 copies in the United States as of December 2016. Commercial performance That's Christmas to Me peaked at number two on the Billboard 200 in the United States. and at number 4 on the Billboard Canadian Albums Chart. The album also charted moderately in other countries including Australia, New Zealand and Norway. On December 1, 2014, That's Christmas to Me was certified gold by the Recording Industry Association of America and became the group's first accredited release in the US. By year's end (December 31, 2014), Billboard reported that the album had sold a total of 1.14 million copies, becoming only the 4th album to sell a million copies in 2014 in any genre (being surpassed only by Taylor Swift's 1989, the Frozen soundtrack, and Sam Smith's In the Lonely Hour) and was the Top Selling Holiday Album for 2014. Pentatonix became the first act to top both the Holiday Albums and Holiday Songs charts simultaneously since the Holiday 100 launched as a multi-metric tabulation in December 2011. The album is also the highest charting holiday album by a group since 1962. The album has sold 1,900,000 copies in the US as of December 2016. It is the only Christmas album to appear on the 2010s decade-end chart for the Billboard 200, charted at 75. A single from the album, the group's cover of "Mary, Did You Know?", both debuted and peaked on the Billboard Hot 100 at number 26, number 7 on the Adult Contemporary chart,