I've realized during private lessons with my teacher that I sort of hum the notes while I play and I'm not sure how to stop. It's really embarrassing. Does anyone else do this? To stop do I just have to focus on just blowing air rather than both air and humming, or is there something else I can do? I don't know what, but I figure it's worth a shot asking. I feel like this is the dumbest question ever. Haha.