Pentatonix's holiday special was full of star-studded performances. In addition to performing a chilling duet with Kelly Clarkson [1], the a cappella group was also joined by '90s boy band Backstreet Boys for a stripped-down rendition of "Winter Wonderland." The groups were in perfect harmony as they sang the holiday tune at Planet Hollywood, where BSB is currently performing their Las Vegas residency [2]. While we have plenty of new BSB music [3] to look forward to in the new year, this performance really has us wanting a full-length BSB Christmas album.
PTX and BSB - Winter Wonderland (Snippet)
