Pentatonix's fourth studio album and second holiday-themed release, 2014's That's Christmas to Me, showcases more of the innovative a cappella group's electronic dance music-influenced vocal sound. The album comes on the heels of the group's other 2014 release, PTX, Vol. 3, and two years after the Yuletide EP PTXmas. Here, the former NBC Sing-Off season three champions perform a bevy of Christmas classics including "Hark! The Herald Angels Sing," "Dance of the Sugar Plum Fairy," "Silent Night," and others, as well as the newly minted title track original.