We may receive a commission on purchases made from links. Beloved a cappella group Pentatonix has been on a whirlwind ride ever since making it big by winning "The Sing-Off" in 2011. Their success ...

Explore Pentatonix's "Mary, Did You Know?" lyrics and find similar songs that capture the spirit of the season. Click to find ...

By traveling with them, filming, and hanging out on off time, Hausdorff naturally bonded with all the Pentatonix band members, forming a particularly close relationship with Kirstin Maldonado.