Man sleeps on the tube listening to Chopin

This might be the birth of a new idea, I really got into this sketch. The guy in question had no idea. It's essentially a fast warm up sketch. You can imagine it with colour, a bit more going on around him. 

I've been listening to a lot of Chopin lately, I think it's starting to influence my work. I feel like it gives me a rhythm to work to when I'm trying to sketch quickly.