- Bros
- JOHNNYSWIM
- Cyndi Lauper
- Bianca Ryan
- Hot Chelle Rae
- Helene Fischer
- Rosie O'Donnell
- Marc Anthony
- Big Time Rush
- Kelly Clarkson
- Ummet Ozcan
- Belinda Carlisle
- Brian Kennedy
- John Legend
- Clay Aiken
- Britney Spears
- Elvis Presley
- John Denver
- Whitney Houston
- Human Nature
- Linda Eder
- Klaas
- Carly Simon
- New Kids On the Block
- Boney M.
- Kylie Minogue
- Wilson Phillips
- Billy Gilman
- Backstreet Boys
- Bassjackers
- Julie Andrews
- Sarah McLachlan
- Shakin' Stevens
- Fiona Apple
- Rod Stewart
- Jim Nabors
- DJ Klaus Noel
- Willie Nelson
- Pentatonix
- Holly Conlan
- Meghan Trainor
- Lenka
- Pat Boone
- Mel Tormé
- Walk Off the Earth
- Home Free
- David Archuleta
- Air Supply
- Jordin Sparks
- Jim Brickman
- Susan Boyle
- Jessica Simpson
- Shawn Colvin
- Dimitri Vegas & Like Mike
- Mariah Carey
- Darlene Love
- Baccara
- Kenny Loggins
- B2K
- Fifth Harmony
- Gloria Estefan
- Charity Vance
- F4ST
- Johnny Mathis
- Tasha Layton
- Jhené Aiko
- *NSYNC
- Sara Bareilles
- Ella Fitzgerald
- Lea Michele
- Harry Connick, Jr.
- Jerry Vale
- Tori Kelly
- Michael Bolton
- She & Him
- Zara Larsson
- Loreena McKennitt
- Dido
- Chris Brown
- Tino Rossi
- Céline Dion
- Benoit Hutin
- Cody Simpson
- Blasterjaxx
- NERVO
- Christina Aguilera
- Gene Autry
- Glee Cast
- The Manhattan Transfer
- Modern Talking
- Priscilla Ahn
- Pernilla Wahlgren
- The Waitresses
- Instrumental Champions
- Dimitri Vegas
- All-4-One