A classical saxophonist with a jazz background, his activities have ranged from co-leader of the Juilliard Jazz Ensemble to nightclub performer for many famous entertainers. He has been a soloist several times at the World Saxophone Congress in the United States, Canada, Europe and Japan, and continues to be active nationally as a soloist and clinician, having performed professionally in 46 states, Mexico, Canada, Thailand, Peru, Taiwan, and South Korea.
Greenberg has published a book on musicianship, and several arrangements and transcriptions of music for saxophone. He has also written articles and music reviews. These publications are available through MonteVerde Music, Dorn Publications, Southern Music and Western International Music.
Recordings
A CD of music by William Schmidt, "The Art of the Tenor Saxophone," (WIM Records).