The third installment of ABC’s “The Disney Holiday Singalong” is set to be the most star-studded yet. Katy Perry, Pink, Michael Bublé, Adam Lambert, opera legend Andrea Bocelli, Leslie Odom Jr. and K-Pop superstars BTS are just some of the artists who’ll be participating in the night of classic holiday musical performances. In addition, the members of the Broadway casts of “The Lion King” and “Aladdin,” as well as the North American touring company of “Frozen,” will come together at New York’s New Amsterdam Theatre, which has been closed since March, for a special performance of “Frozen’s” “Let It Go.”
