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© 2017 by HolliVOX











An indefatigable teacher - 20 years as the principal associate vocal technician to renowned master clinician Joann C. Zajac. Zeffin is the owner of SoulMint Studio.


Singing Actor’s Lab™ was born out of a love of teaching and vast knowledge of musical theatre and opera genres. This class is designed to help singers from any genre (including pop) find a way to be effective in storytelling through the voice.

Los Angeles