In his short, tumultuous life, Franz Schubert (1797-1828) produced an astonishing amount of music. Symphonies, chamber music, opera, church music, and songs (more than 600 of them) poured forth in profusion. His "Trout" Quintet, his "Unfinished" Symphony, the last three piano sonatas, and above all his song cycles Die Schone Mullerin and Winterreise have come to be universally regarded as belonging to the very greatest works of music? Who was the man who composed this amazing succession of masterpieces, so many of which were either entirely ignored or regarded as failures during his lifetime?...