John is internationally renowned as a "teacher of teachers." He has trained hundreds of voice teachers through master classes and his online Voice Teacher Bootcamps.
John has been a featured columnist for Backstage Magazine, publishing over 40 articles on vocal technique. John has lectured and taught at USC, The Learning Annex, Mount Saint Mary's, and Paul McCartney's Liverpool Institute of the Arts.
John's students range from beginners to superstars. He is available at his studios in North Hollywood and Glendora CA, and from anywhere via Skype lessons.