Here's a strange question, so I welcome improvements...
Since I can remember, I've had grand orchestrated music pop into my head throughout the day-- sort of a musical dreaming. It's really good stuff, and I prefer to hear the music in my head than any other music recorded or live, and not just because I have the pleasure of "knowing what's going to happen next".
My question is simply, what are some techniques/tools and relevant literature (whether more how-to or more theoretical) on how to capture the vast scores happening in my head (given that like most thinking/dreaming activities, it comes too fast to write down in realtime)?