DD7's virulent perfectionism almost disappears when he practices piano - it's a bit eerie. He will repeat as necessary to reach perfection without the tantrums/quitting/bad attitude that can occur in other pursuits. For that reason, alone, we'd stick with it, but he also genuinely enjoys it. He chose the instrument and has played for 3 years. We haven't shared any testing information to date, but he's switched music schools and I'm considering doing so to help his new teacher understand his strengths and weaknesses. That seems a kindness to both of them. He picks up the concepts very quickly and the beauty of piano is that he doesn't have to learn how to make the note, he just has to learn the right key to press, which mitigates some of the frustration of comprehension outpacing fingers.