Ferruccio Busoni is most widely known today as the composer of such works as the Second Violin Sonata, the incidental music for Gozzi's Turandot, and the most monumental piano concerto in the repertory (some eighty minutes long, with male chorus in the finale). But Busoni was also renowned in his day as an author and pedagogue and, most especially, as a pianist. Busoni's recordings of pieces by Chopin and Liszt -- and of his own arrangements of keyboard works by Bach and Beethoven -- are much prized and studied today by connoisseurs of piano playing. Yet even his most important biographers...