the only reason i don't think it's *just* percussion is because at the points i mentioned it sounds the pitch is changing rather quickly, like you could do by blowing different ways into a brass instrument (or for example, if you plucked a guitar string then slid your finger over; that kind of thing.) you can't do that with percussion.

(i know what i'm talking about, i just don't know the musical terms for it.)

Yeah, but when Copeland made the music, he had a setup of different musical instruments that he had already recorded the sounds for, then played them on a keyboard. It's very possible to switch tunes (I don't really know the term either) quickly on a keyboard.

the only reason i don't think it's *just* percussion is because at the points i mentioned it sounds the pitch is changing rather quickly

Then we're probably talking about different things. What I suppose you're referring to sounds like a quick strum of a set of strings; it may be a steel stringed guitar with rather loose / flappy strings, it could also be something like a santoor or some other zither-type instrument.

(i know what i'm talking about, i just don't know the musical terms for it.)

(i always thought brass instruments were a little heavier on the low, deeper end than what's here, but they could just be playing higher notes/octaves. i really don't know.)

i think it's two different things because the chime sound is more audible at different points, and the last few notes of the melody (end of 00:11, 00:15) make it sound like there's something else playing and changing notes even when the chiming isn't playing.

Evidently you can't have timestamps with this bbcode. It's at 0:10.