Pentatonix [1] pulled out all the stops during NBC's A Pentatonix Christmas Special [2] on Wednesday night. Aside from singing some of their greatest Christmas covers [3] on stage, they also got a little help from their pal Kelly Clarkson [4] when they performed "I'll Be Home For Christmas" at her home in Nashville. Not only did the twinkling lights on her lawn make for the perfect backdrop, but her soulful vocals will definitely leave you starry-eyed. Even the a cappella group couldn't help but smile as she belted out the lyrics. Can these six please make more music together, ASAP?
