- Elton John
- Michael Bolton
- Edyta Gorniak
- Hannah Montana
- Julie Andrews
- Bruce Reitherman
- The Chorus of the Lion King 2: Simba's Pride
- Raven-Symoné
- Christina Aguilera
- Jodi Benson
- Jocelyn Brown
- Barenaked Ladies
- John Cardon Debney
- Heather Headley
- Taylor Davis
- Peter Hollens
- Björn Skifs
- Alan Menken
- Jordan Pruitt
- Disney Characters
- *NSYNC
- Chorus
- Lee Ann Womack
- Carly Simon
- Jump5
- Jonas Brothers
- Kyle Landry
- Ruben Blades
- Karliene
- Five for Fighting
- Tokyo Kosei Wind Orchestra
- The Philadelphia Orchestra
- Lebo M
- Corbin Bleu
- Hayden Panettiere
- 98°
- Monika Martin
- Jim Brickman
- A*Teens
- Dungen
- Cam Clarke
- Phil Collins
- Michael Giacchino
- Boyzone
- Jon Secada
- Geek Music
- Peggy Lee
- Angela Lansbury
- Ricky Martin
- Roger Bart
- Billy Joel
- Bill Lee
- Gabriella Montez
- Randy Newman
- Brad Kane
- Lillias White
- Lindsay Lohan
- Amy Adams
- Carter Burwell
- Martina McBride
- Tommy Körberg
- Natalie Cole
- Lyle Lovett
- Aly & AJ
- Danny Kaye
- R.E.M.
- Alan Silvestri
- The Cheetah Girls
- Barbara Hendricks
- Malú
- Smash Mouth
- Adriana Caselotti
- Chad
- Amy Grant
- Judy Kuhn
- Belinda Carlisle
- Hans Zimmer
- Caleb Hyles
- The Ten Tenors
- Aaron Carter
- The Cast of High School Musical
- Jennifer Rush
- The City of Prague Philharmonic Orchestra
- Rufus Wainwright
- Elvis Presley
- Angélique Kidjo
- Danny Elfman
- Vanessa-Mae
- Rob Thomas
- Kamehameha Schools Children's Chorus
- Tommy Steele
- Alison Krauss
- Rowan Atkinson
- Patti LaBelle
- Lea Salonga
- Jonathan Young