I acquired a Rochelle less than a year ago and have enjoyed the OAIM tutor as well. I had played in the high school band and had played a little piano so I knew how to read music -- 35 years ago. Although I began my concertina education relying heavily on standard music notation, a month ago I decided to put away all the paper and to learn and play only by ear. It has been frustrating, fun and very rewarding -- and a whole new learning experience. I still have a long way to go. In hindsight, I wish that I had NOT used written music from day one on the concertina. As noted above, the concertina is a perfect instrument to play to pick out a tune. And your OAIM videos -- playing with them over and over -- is a great way to begin your education. As you get more experienced, you may also want to use a music slowdowner app, which allows you to slow down a tune, without changing the pitch. Best wishes on your journey. You are asking all the right questions.