The Disney Family Singalong
Ryan Seacrest , Auli'i Cravalho , James Monroe Iglehart , Donny Osmond , Demi Lovato , Ariana Grande , Amber Riley , Kristin Chenoweth , Christina Aguilera , Jordan Fisher , Kenny Ortega , Josh Groban , Michael Bublé , Beyoncé , Derek Hough , Hayley Erbert ,