Quote:
Originally posted by lrngkybrd:
When I entered in C7 it displayed the notes I should play on the keyboard. I then changed to C9 and the keyboard stayed the same. It didn't change at all from C7 to C9, that's why I thought it was the same.


that's why you should switch to pianist mode and then you'll see and hear the differences between 9th and added 9th even with auto accompaniment. By the time you've extended the chords beyond 9ths it becomes more difficult to actually hear the differences in auto accompaniment, particularly with fast chord changes.