Synopsis: It is said that Beethoven’s The Tempest was inspired by his sighting of a cavalier riding through the forest. As I was coming home on an iron horse I filmed the blue twilight ride between Hannover and Berlin. A week later I came across Hélène Grimaud’s recording, and in her liner notes I red that she feels particular keys in colour tones. D minor is blue and The Tempest is black and blue...