In her Histoire de Ma Vie, the author George Sand describes an encounter with Frédéric Chopin upon returning one night from a trip to Palma. Chopin was playing a melody on the piano, in the grip of a strange delirium. “He saw himself drowned in a lake,” she wrote:

 

heavy and ice-cold drops of water fell at regular intervals upon his breast, and when I drew his attention to those drops of water which were actually falling at regular intervals upon the roof, he denied having heard them. He was even vexed at what I translated by imitative harmony…. His genius was full of mysterious harmonies of nature, translated by sublime equivalents into his musical thought, and not by a servile repetition of external sounds.

The work that Chopin was playing that night — according to “The hallucinations… More…