So I'm working on a piece where the idea of storms and thunder play a key role. The main character is a musician, a pianist, and I'd really like him to be working on a piece of classical music that fit into the theme of the story. Unfortunately, I'm having a sort of hard time finding 'nature music' that fits the bill. So, in short? I'm searching for a classic piano piece that deals with storms/thunder either through theme or the feeling it invokes. Any suggestions would be great because as of now... I've got nothing.