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Paul Dukas was one of Olivier Messiaen's teachers. Dukas was a renowned French composer, critic, and teacher known for his orchestral work "The Sorcerer's Apprentice." Under Dukas's guidance, Messiaen developed his musical language and compositional techniques. Dukas encouraged Messiaen's exploration of non-traditional harmonies, rhythms, and colors, which would later become characteristic of Messiaen's unique musical style.