If it's the drum track and you are locking it you get a different sound depending on where it is on the staff. So instead of getting sound X when you move it you don't get a change in note you get a change in instrument.

Check out this for a list. Then mess with the drum track by moving notes.


http://www.zendrum.com/resource-site/drumnotes.htm


John Conley
Musica est vita