The transpose function on the Performance stuff is a little lame. Sure it'll work if what you want to do is compensate for whether you are playing the Jazz Sax stuff with an alto instead of a tenor, but what if you really want to change the key? You've got stuff written in E for the sax which is a key that only guitar players love. E flat horn players really hate it when they have to add three more sharps to a key signature that has too many to deal with already. I digress though. Say your tune is written with 5 sharps and I want to practice it in an easier key, I can use your transpose function to change the sound but the display doesn't change. I'd like to be able to tell it to play in C or F or G and have the program give me the appropriate music.