Kari Ragan, DMA, SVRS-VT, is an internationally recognized voice pedagogue, author, and Singing Voice Rehabilitation Specialist-Voice Teacher (SVRS-VT) with a career spanning over four decades. Known for integrating voice science in the service of artistic expression, she works with singers across a broad range of vocal styles and professional contexts. She is the author of A Systematic Approach to Voice: The Art of Studio Application, and recipient of the Van L. Lawrence Fellowship and NATS Foundation Pedagogy Award. Dr. Ragan served on the voice faculty at the University of Washington (2010–2021) and is affiliated with the UW Performance Voice Clinic to support singers with an injured voice. She is the co-founder of the annual Northwest Voice: The Art and Science of the Performance Voice Conference, which began in 2016. In addition, Dr. Ragan has served as a NATS Intern Program Master Teacher and was an invited keynote speaker at both ICVT and PEVOC. In 2025, she was invited into membership of the American Academy of Teachers of Singing (AATS). She is a frequent presenter and hosts the monthly NATS Chat series. Dr. Ragan maintains an independent studio specializing in cross-training singers and mentoring the next generation of voice teachers.

Marci Rosenberg, MS, CCC, SVRS-SLP, is a singer, speech-language pathologist, clinical singing voice rehabilitation specialist (SVRS-SLP), and co-author of The Vocal Athlete text and workbook (3rd Ed., Plural Publishing). A former performer, Marci earned her BM degree in vocal performance from the Peabody Conservatory. She then completed a voice research fellowship at the National Institutes of Health before finishing her graduate studies in speech-language pathology. For 25 years, Marci specialized in rehabilitating injured voices at the University of Michigan Vocal Health Center and is the on-site SVRS-SLP for the University of Michigan Musical Theatre, Theatre, and Voice departments. Marci is internationally recognized as an SVRS-SLP and is a frequent lecturer and workshop presenter. She served as guest faculty for the NATS Science-Informed Voice Pedagogy Institute and as guest faculty for the CCM Summer Pedagogy Institute. She was featured on the award-winning Canadian science documentary series The Nature of Things in A User’s Guide to the Voice. Very active with PAVA, Marci currently serves as Vice President of the Pan American Vocology Association. She maintains an active private voice studio and consulting practice. Her diverse clients include professional performers and executives, spanning the boardroom, the Broadway stage, the Metropolitan Opera, and everything in between.