Yup Tony, this thing is going to excel in so many vertical markets that some people will invariably use it in multiple day to day. In the end, that really means it's not strictly a vertical device.

Operating off an external device would require using a wireless remote device operating on BlueTooth or Wifi, or using a wired controller developed using the dock connector.

Or, if they wanted to be crazy, they could sample audio through the mic and change the page when you've played up to a specific point on your instrument. Now how cool would that be?