- Pink
- Katy Perry
- Colbie Caillat
- Leona Lewis
- Carrie Underwood
- RBD
- Marion Raven
- Alexa Ray Joel
- Blake Lewis
- Jordan Pruitt
- Natasha Bedingfield
- Jesse & Joy
- Bianca Ryan
- Jordin Sparks
- Ruben Studdard
- Hayden Panettiere
- Katharine McPhee
- Kimberley Locke
- Taylor Hicks
- Clay Aiken
- William Hung
- Tamyra Gray
- Everlife
- Lisa Marie Presley
- JD Natasha
- The Veronicas
- Joanna
- Susan Cagle
- Nikki Cleary
- Justin Guarini