Hello, this is my very first post on here and I'm hoping I'm in the right spot haha. I've been having issues with my range when I'm playing a piece, like say there is a High A flat in a piece.. I can hit the note comfortably when I am doing a scale or warm up, but when it comes to putting it into context in a piece it comes out very sloppy and out of tune. Any tips or is it just a matter of air?