- Glee Cast
- Shirley Bassey
- Alexander Rybak
- Alexandra Burke
- Zara Larsson
- Boney M.
- Kenny Loggins
- Belinda Carlisle
- Band Aid
- Harry Belafonte
- Kelly Clarkson
- Johnny Mathis
- Fifth Harmony
- Loreena McKennitt
- Brian Kennedy
- Paloma Faith
- Wizzard
- Kylie Minogue
- Girls Aloud
- A Great Big World
- Cyndi Lauper
- Backstreet Boys
- Sia
- Il Divo
- Miley Cyrus
- Christopher Cross
- The Drifters
- Judy Garland
- Big Time Rush
- Willie Nelson
- James Taylor
- Brenda Lee
- Sarah McLachlan
- Chris Rea
- Hudson Taylor
- Barry Manilow
- Billy Joel
- Barbra Streisand
- Peggy Lee
- Cliff Richard
- Meghan Trainor
- Prince
- Wilson Phillips
- Wham!
- Air Supply
- George Ezra
- Liam Lawton
- Steps
- Ella Fitzgerald
- Jessica Simpson
- Britney Spears
- Frank Sinatra
- Emmylou Harris
- Tiffany
- Train
- John Legend
- John Denver
- Bette Midler
- Shayne Ward
- Joan Armatrading
- Gloria Estefan
- Metro Station
- RuPaul
- LYRA
- RuPaul
- LYRA
- Declan O'Rourke
- Natasha Bedingfield
- Carly Simon
- *NSYNC
- Sara Bareilles
- Chris de Burgh
- New Kids On the Block
- Chris Brown
- Walk Off the Earth
- Julie Andrews
- Jewel
- Leona Lewis
- Dido
- Shakin' Stevens
- Chicago
- Céline Dion
- Pretenders
- Mariah Carey
- Whitney Houston
- Christina Aguilera
- Johnny Logan
- Westlife
- Bob Dylan
- Rod Stewart
- Jim Reeves
- Aretha Franklin
- Michael Bolton
- Pentatonix
- Elvis Presley