What does his choice of music say about his feelings about the subject matter and how it should be treated? His method and speed of changing the images?

And, more importantly, his selection of images. Is it a commentary on trends in art over a period of 500 years or is it his view of what should be thought of as beautiful and aesthetically pleasing?

Perhaps the selection in the second is more telling. What is left out may be just as important, or more, than what is included.