Katy Perry, BTS, Ciara and more. After several at the start of the pandemic, the fan-favorite special is back, with a holiday twist.Perry, BTS and Ciara will be joined by Andrea Bocelli, Michael Bublé, Chloe x Halle, Derek Hough and Hayley Erbert, Julianne Hough, Adam Lambert, Leslie Odom Jr., Pink and Kerry Washington, with additional stars announced at a later date. Celebs will be delivering their best renditions of holiday songs during the special, which will also see Disney on Broadway makes