In 1838, ten years after the death of Franz Schubert, Robert Schumann traveled to Vienna, and while he was there he paid a visit to the graves of Schubert and Beethoven. On a whim, Schumann decided to call on Schubert’s brother, Ferdinand, who was living in Vienna, and this turned out to be perhaps the most fortuitous social call in the history of music. And that’s because Ferdinand showed Schumann a bunch of his brother’s unpublished manuscripts, and among them was the manuscript—the long-