Marcel Marnat's catalogue of Ravel's complete works lists eighty-five works, including many incomplete or abandoned. Though that total is small in comparison with the output of his major contemporaries, it is nevertheless inflated by Ravel's frequent practice of writing works for piano and later rewriting them as independent pieces for orchestra. The performable body of works numbers about sixty; slightly more than half are instrumental. Ravel's music includes pieces for piano, chamber music, two piano concerti, ballet music, opera and song cycles. He wrote no symphonies or church works.