for 2 reasons. Schoenberg and Gershwin might have discussed music in depth if they were tennis partners (which I didn't know), so he might have had some insight. Also, I loved the idea, without understanding it, that Gershwin's music was of a piece, not built from interchangeable parts. I always thought Schoenberg's music sounded precisely as though it was built from interchangeable parts, possibly by a robot, so that remark interested me. The listing of composers at the end is I think meant to be a comparison: Johann Strauss, Offenbach, and Lehar are the mechanics, while Debussy, Brahms and Puccini are the artists. Is this a correct interpretation?