Before entering the world of church music, John served as General Director of Boston Lyric Opera and the Lake George Opera Festival. As a pianist, he has accompanied many international singing stars in concert, including Carlo Bergonzi, Christina Deutekom, Nicolai Gedda, Jerome Hines and Deborah Voigt. John has been a guest conductor for opera companies in San Diego, Honolulu, Atlanta, Syracuse, Rochester NY, Fort Worth, among others; and has taught at the University of Texas, Austin, New England Conservatory and the University of Connecticut. He is currently an adjunct professor at Brookdale Community College where he teaches piano and The Creative Process.