Lis Lewis

Lis Lewis is an American voice teacher, author and performance coach. Lewis's clients include Miguel, Gwen Stefani, Rihanna, Courtney Love, Britney Spears, Colbie Caillat, Linkin Park, Demi Lovato, Tyson Ritter of The All-American Rejects, The Pussycat Dolls, Bryson Tiller, Iggy Azalea, and Jack Black.
Musical background.
Lewis grew up in New York City and began training as a child at the Dalcroze School of Music as well as with private music teachers. She attended both the University of Wisconsin-Madison and the University of Nebraska–Lincoln and has a master's degree in Theater and Music. Lewis has taught voice classes and lectured at the Liverpool Institute for Performing Arts, University of California, Berkeley, Musicians Institute in Hollywood, Blue Bear School of Music, Santa Monica College, National Academy of Songwriters, and UCLA. 
Career.
The Singer's Workshop.
Lewis founded a series of workshops, classes as well as private voice lessons called The Singer’s Workshop in Los Angeles. She has been training recording artists since 1983. In 2012 Lewis worked with Grammy winning singer, Miguel. Lewis appeared as vocal coach on CBS’s ' and MTV’s "Rock The Cradle". She has also appeared as a commentator on TV Guide Network’s "Idol Chat", VH1’s ', and "".
Author.
Lewis is the author of "The Singer’s First Aid Kit" and "The Pop Singer’s Warm-Up". Both books not only focus on exercises and information
to train his/her voice, but expand upon the challenges that professional singers face.