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

Cast:Scott Hoying, Mitch Grassi, Kirstin Maldonado, Kevin Olusola, Matthew Sallee, Kelly Clarkson,

Genre:Music,

country:United States of America,

Production:AEG Ehrlich Ventures,