There is a lot of call for adding violin, drums, harmonica etc....I would much prefer to see better lesson quality and structure and video lessons for the instruments that exist over people hoping to start a new instrument. Give us better statistics, for example, the lesson statistics that come at the end of lesson, should be available after each song. Why are there not more of the "workout sites" (scales, etc) incorporated into the levels? There seem to be a bunch of workout items, I never encounter when going through a level or taking lessons, that are all marked for that level? What a waste. Overall I would rather you polish what you have over expanding on instruments.