I just realized something: I am dumb.
As a non-percussionist, I didn't know that a glockenspiel plays on treble clef 15va alta or whatever it is (really high) and assumed @9 sounds bad. But when I got Musescore and started composing muusicz, I noticed how high a glockenspiel really is. When I tried again on SB, it sounded great!
Moral of the story: don't assume that every instrument is a tenor instrument and can only play middle C (middle C is around the middle of the tenor vocal range, seeing that everyone tenor's voice is different from one another)
