James Thatcher began his professional career at age 16 when he played and studied in Mexico City with his uncle, Gerald Thatcher, former principal hornist with the National Symphony of Mexico. Subsequent instructors have included Fred Fox, Don Peterson, Wendell Hoss, James Decker, Vincent DeRosa and master classes with Hermann Baumann. Mr. Thatcher has been a member of the Phoenix Symphony, the Utah Symphony, the Pacific Symphony and the Los Angeles Philharmonic. He is currently principal horn of the Pasadena Symphony, the New West Symphony and the Los Angeles Music Center Opera, but principally he is a studio player, a recipient of the Most Valuable Player Award from the National Association of Recording Arts and Sciences and "arguably the most often heard horn player in the world" due to his performances on some 70 to 80 films per year for the last 20 years.