Stick around this thread for a while; already several composers on it. Maybe one will offer you some links to their work.
Actually, may not have been clear on this, but I am actually a composer myself. The company that I co-founded has worked on some major projects, but they all seemed to have come from luck. We have a lot of contacts with bigger name composers, so we've been given work that they had to turn down. Now that we're looking to expand a bit, I was curious about ways to start relationships with more directors.
Though it's really great to hear a non-composer's thoughts on the music. The diegetic music discussion was fun to read. Actually, in my school we called it source music. Took me a second to make the connection.