Mr. Tatgenhorst received his music degree from Ohio State Unsiversity and has done graduate work at UCLA and Northwestern. John resides in Chicago where he formed a commercial music company that has done thousands of commercials for advertising agencies and corporations. John conducts, records and composes works for the London Symphony Orchestra and the Royal Philharmonic Orchestra, and does arranging for the Philadelphia, Chicago, St.Louis, Boston Pops Orchestras, the Canadian Brass and Star of Indiana. Mr. Tatgenhorst also has an office in Beverly Hills, California where he writes for the film and television media.