I always wondered how trombone players knew exactly which pitch to play, and how far to move the slide in and out. I still wonder. I've watched bands play all my life, and it is still a fascination to me.
I tried playing a friend's trumpet, but never could come up with much other than an agonized "oink" sound. I admire those who can play, though. About the only instrument I play with any proficiency is the Irish tinwhistle. That's more of a woodwind, I suppose, so I guess I was just born to play the woodwinds and not brass.