Not a caption, just a note. I assume King is on the right track.
I know nothing of music. Can barely play iTunes.
Every June, I have this image my mind's eye of Tchaikovsky scribbling away, composing this work. He looks a lot like the cover art from the old Kansas album (Leftoverture maybe?)
Anyway, I see this guy thinking, "Hmmm, what am I missing. I know, a lot of bells. <tries it out> No, that's not quite it. I need cannons! <tires it out> Perfect!"