Rick Chertoff (five-time Grammy-nominated producer: Cyndi Lauper, Joan Osborne, Sophie B. Hawkins)

“Ruth is an exceptional singer with a powerful and expressive voice. She is insightful and intelligent and has a great gift for sharing her knowledge of the voice, and songwriting with her students. The Singingbelt is ingenious. I have seen Ruth work with a singer for an hour and get the results we needed in the studio immediately.”