Cast:
Barry Gibb, John Travolta, Stevie Wonder, Wilmer Valderrama, Keith Urban, Ed Sheeran, Olivia Newton-John, Katharine McPhee, Demi Lovato, John Legend, Tori Kelly, Nick Jonas, Cynthia Erivo, CĂ©line Dion, Andra Day, Tavares, Thomas Rhett, Neil Portnow, DNCE, Kelsea Ballerini, Avi Kaplan, Scott Hoying, Mitch Grassi, Kevin Olusola, Kirstin Maldonado, Matthew Sallee