What tracks would you guys suggest to test highs. I have lot of tracks to test bass, I have some tracks to test mids, but I have realized that I lack tracks for highs. I have immediately thought of Jazz (which I do not like much so I have few and listen never), and I have seen I have a few tracks of that with some nice hi-hat and other metal percussions which are good for highs from 6 to 12k more or less. But that is. Not much. Some suggestions?