John is a composer, producer and performer with a wide variety of musical experience spanning many genres. He has composed and produced music for such groups and ensembles as the Dallas Symphony Orchestra, the U. S. Air Force "Airmen of Note," the Texas Boys Choir, and the Dallas Brass. His published music appears in the catalogs of Hal Leonard Publications, Warner Bros. Publications, and Word Music, Inc. He has produced music for such diverse clients as the Dallas Cowboys Football Club, Electronic Data Systems, Radio Shack, the Salvation Army, Southern Methodist University, and Walt Disney World.