Right from the opening moments we know we are in for something special. Orchestra and soloist share the first subject, a novel gesture. Not until Beethoven’s Fourth Concerto (1806) did the piano soloist play anything until the orchestral exposition was finished. This opening gesture becomes a hallmark of the entire movement: orchestra plays the fanfare, piano responds. Only once is the order reversed – at the announcement of the recapitulation, and it is a startling moment indeed to experience this exchange of roles.