This could be seen to be in the wrong section but I found this one most suitable.

I have lots and lots of ideas on music (not talking about just simple guitar,vocals etc pop songs, full orchestras and "proper" music), the problem is, I can't get it on paper. When I hear it vaguely in my head it seems like the best music ever, I can't even imagine yet how it will sound when I can hear all of it in full depth. I'm still young, 16 in January, and still in comphrehensive school, and I'm going to have to make up my mind if I'm going to Music College (there is one of the best ones in the country near me), I just don't know how much will it help with this, if at all? So, on to my questions.
Is there any way to somehow reach a state or somehow just connect with my subconciousness or something to maybe hear it more clearly or something. I've tried many different audio devices and whatnot and a mantra that Leo shared with me (this actually helped a lot, but not with this problem) to increase creativity. I've yet to succeed in a Lucid Dream so I can't say if trying to compose it in such would help.
Any ideas? Someone faced a similar problem in their younger days/etc?