Most people have never heard of Canadian composer Andre Mathieu. Mathieu was a rising star in the 1930s and 1940s. But he led a troubled life, dropped out of the music scene, and died in obscurity in 1968. Some call him the Canadian Mozart, although his style is closer to Rachmaninoff, who called Mathieu a genius. On today's show, Alain Lefevre performs Mathieu's fourth piano concerto with the Tucson Symphony Orchestra.