He wrote his first symphony at age 8x02005;years, and then grew into a prolific composer of over 600 pieces of music, including more than 50 symphonies, 27 concert arias, 26 string quartets, 25 piano concertos, 21 stage and opera works, 17 piano sonatas, 15 masses and 12 violin concertos. In his 1964 book Beat the Dealer. An empty purse is a fine source of inspiration. And when colleagues they had known for years confessed to ludicrously unlikely accusations, they surely cant employee performance appraisals forms exe believed it.