If you're yet to hear any of the beautiful covers by the talented acapella group Pentatonix, then it's definitely about time you did! Pentatonix have been remixing some classic holiday season songs, and the results are absolutely wonderful. This amazing group has the ability to make any old song new and exciting, which is particularly great for festive songs as it can be difficult to find ones that haven't been overplayed. This video is their take on "Mary, Did You Know?" and, we think you'll agree, the music is hauntingly beautiful.
