There is a app in the app store called trumpet pro. It is made and designed by a good friend of mine. It's designed to help you improve your fingering with any scale. They have a light version, but the full version is loaded with crazy songs including the bumblebee. With alot of practice, you could master it on your iphone/itouch and easily play it on the trumpet. it's 25 dollars because this is not a toy. It is an actually learning essential and i highly recommend it to all trumpeters, beginners and pros. this is absolutely astonishing and well worth it. try the lite version first. and then buy the full version