Austrian composer and music theorist (1883-1959). He is most famous for developing a method for composing with all 12 notes of the chromatic scale. Vintage ink signature, “Josef Matthias Hauer, Wein,” and dated August 4, 1955,” on an off-white 5.5 x 3.5 card. In very fine condition. Accompanied by the original mailing envelope. RRAuction COA.
