trumpet_man

I've looked them up. If this helps, which it might, remember, key signature has nothing to do with turns. For the note you're starting on, it is in the key of that. For example, if you start on a A, you're in the key of A, same goes for any other note, even if you're key signature says otherweise. Secondly, start on the note the turn starts on, then quickly play a note above that (remember, the next note of what the scale would be what note you start on, for instance, if starting on B flat, go up to C, regaurdless of key signature you are in) after that go back to the note you started on, then go down one scale note, (starting on a B-flat you would hold it, go up to a C, back to the B flat then down to an A, then back to the B-flat to finish). If you started on a C (regaurdless of the key signature) you would hold it, go up to a D, back to the C, down to a B natural, then back to the C again.

As for the rythm, I'm not sure if there is any particular rule, just the director's/composer's preference, or your's if you're doing a solo. If what I've said is wrong, that means the source I looked it up was wrong, but I doubt that. I hope this helps. By the way, I'm also a sophomore in highschool, and I too just learned this, so it's fresh in my mind.