In 2007, I was interviewed by a journalist over lunch a day before the premiere of my Violin Concerto. One of his first questions was, "So why do you write in these old forms, the symphony, the concerto ... ?" I told him that these were simply titles which imply nothing about the form, which was another thing entirely. But it led me to ask myself: What is a symphony these days? If it no longer comprises a four-movement structure with an energetic first movement, a slow movement, a scherzo, and some kind of quick rondo, then what exactly characterizes it?