Jane Olivor Lorrie Morgan Linda Eder Elaine Paige Damien Dawn Katie Armiger Alana Grace David Lambert Brooke Hyland Barbra Streisand Julia Fordham Lesley Roy Emily Osment Alyssa Bernal Julia Sheer Jersey Boys Joni Mitchell And L.A. Express Bradley Caleb Kane Anna Blue Richard Marx Patty Loveless Anna Clendening Lauren Alaina Gary Jules Charlie Mars Le37 Kari Kimmel Hugo Judy Garland The Carpenters Imany Meat Loaf Alison Kraus Carole King Edith Piaf The Silent Comedy Andrea Bocelli Celtic Woman Kylie Minogue Claude Debussy Cyndi Lauper Charlie Puth Carly Simon Tom Odell Jason Mraz Calvin Harris Abba Stevie Nicks Joni Mitchell