oh man, this is really funny.
i realize you're just learning this stuff, so i'm not going to knock you. if i remember correctly, halo's 'monk' theme was based on a dorian scale, which means it's got a lowered third and seventh from the major scale in the same key. or, a better way to put it would be to say that it starts on the second note of the scale and follows that key (modes are funny). or, in c, it's C, D, eb, F, G, A, bb, C.
edit: yo raptor, i should point out that i'm helping this dude to get some stuff ready. like, i'm on his project boards, doing his muzaks.