Pentatonix: A Not So Silent Night

The Grammy-winning a cappella group and special guests Kelly Clarkson, Backstreet Boys, Penn & Teller, and Maren Morris celebrate the holiday in Las Vegas. The Grammy-winning a cappella group and special guests Kelly Clarkson, Backstreet Boys, Penn & Teller, and Maren Morris celebrate the holiday in Las Vegas. The Grammy-winning a cappella group and special guests Kelly Clarkson, Backstreet Boys, Penn & Teller, and Maren Morris celebrate the holiday in Las Vegas. The Grammy-winning a cappella group and special guests Kelly Clarkson, Backstreet Boys, Penn & Teller, and Maren Morris celebrate the holiday in Las Vegas.