“The first thing the dance company does when we arrive is to measure the stage. They have to reset the dance to fit that stage. So you also have to reset the time of the music: In a larger theater, you must play slower. In a smaller theater, you have to play faster. The relation of time and space in music is dynamic. I have a range of speed in mind. If the players don’t pay attention to that, it will look really funny. You can see the stage fill up with dancers because they are playing at the wrong speed.”