VoiceJam 2026 Judges

Rob Dietz is an award-winning singer, vocal percussionist, arranger, and educator with over 20 years of experience in contemporary a cappella. Based in Los Angeles, he is best known for his work on NBC’s The Sing-Off and collaborations with artists and groups including Pentatonix, The Swingles, VoicePlay, Smokey Robinson, Sara Bareilles, and more. His work has appeared on America’s Got Talent, Glee, and Netflix. Rob is a founding co-director of A Cappella Academy and director of Legacy, a nationally recognized youth ensemble. He is a published composer, clinician, and author of A Cappella 101, and currently serves as the national repertoire and resources co-chair for Contemporary/Commercial music for the American Choral Directors Association (ACDA). 

Natalie Weiss is an acclaimed singer, vocal coach, and creator of viral sensation, Breaking Down the Riffs®. Her groundbreaking and fun approach to vocal technique has become a growing standard in the music industry. 15+ years of Broadway, national tours, cast albums, movie soundtracks, and reality TV, Natalie has sung with Broadway greats and iconic TV and media personalities, like Tori Kelly, Ben Platt, Pentatonix, Katharine McPhee, Gaten Matarazzo, and Shoshana Bean, just to name a few.

Dr. Erin Hauger is a Professor at the University of Colorado, Denver, and the founder of two award-winning a cappella groups, MIX and Lark. Both groups have earned acclaim for their innovative approaches to collegiate a cappella, with a reputation for pushing boundaries. They are multiple-time champions of national competitions, recipients of numerous performance awards, and winners of several Contemporary A Cappella Recording Awards.

A passionate advocate for contemporary singing techniques, Dr. Hauger specializes in teaching singers how to belt in a healthy and sustainable way. She frequently presents on this topic and publishes research on the history of contemporary female singers. Her most recent article about Eartha Kitt can be found in the Kapralova Society Journal of Women in Music.