Brochure documenting Roy Stevens’ embouchure clinics, including articles on electromyography (EMG) studies conducted by Dr. John Basmajian (Emory University) and Professor Elmer White. These tests, with Roy wired to EMG machines, validated the muscular principles of his technique. Findings were published in:

Journal of Research in Music Education Vol. 22, No. 4 (Winter 1974)

Nature Vol. 241, No. 5384 (Jan 1973)

Journal of Applied Physiology Vol. 35, No. 6 (Dec 1973)