I was able to pre-learn the b/c box before my instrument arrived in the mail. Enough to pick out a hand full of Irish tunes at any rate. There is actually a surprising amount of transfer from the app to the real thing. I imagine this app could save you thousands of $ if you are considering buying a real box. It will become pretty clear after a few days if you can't wrap your head around a push/pull box....or, like me you could discover that the b/c box is a realistic proposition.