Austrian-born composer (1874–1951) whose development of the ‘twelve-tone’ system proved to be one of the most far-reaching innovations in the history of 20th century music. AMQS on an off-white 3.75 x 2.5 card. Penning four bars from an unidentified work,Schoenberg signs and inscribes, “Autograph fur Herr Adolph Leichtle, Arnold Schonberg 22.V.1934.” In fine condition. RR Auction COA.