That's actually exactly the method I used! I had trouble finding the book again, so thank you for linking me to it. I personally think everyone should learn at

That's actually exactly the method I used! I had trouble finding the book again, so thank you for linking me to it. I personally think everyone should learn at least one song on the piano using this method. It's such a great introduction to how the brain learns. I was amazed the first time I noticed I could actually get better at a song not by practicing longer or harder, but by taking a break and returning only once I felt the urge again (or even better, after a full night's sleep). It's a strange feeling to suddenly glide through a section that you previously found difficult without any additional practice in between.