<Li> Walk off the Earth for the iTunes session series album Live Off the Floor </Li> <Li> Susan Boyle featuring The Overtones on her album Home for Christmas </Li> <Li> Pentatonix released a video on YouTube in which they covered the song; released as a digital single, this version both debuted and peaked at No. 13 on the Billboard Hot 100 chart for the week ending 21 December </Li> <Li> The Christian rock duo For King & Country for their EP, Into the Silent Night </Li>

Where did the little drummer boy song come from