My Evolution lecture by Arnold Schoenberg at UCLA Royce Hall Nov. 29, 1949 includes many musical examples: Verklaerte Nacht, Pelleas und Melisande, Serenade. He briefly discusses his Composition with 12 tones. Video includes an introduction and historical photographs and paintings by Arnold Schoenberg.
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http://www.schoenberg.at/index.php?option=com_content&view=article&id=965:vr01&lang=en