This is a longish story. It includes some muso-materials that may be unfamiliar territory for the non-musician. But the pay-off is well worth it, I believe. So, thanks for bearing with me here.
I have begun working with a new system of ear training and the repercussions of it are mind/body/ear boggling. As of three weeks ago I was not prepared to go out on a limb and recommend it. But now I am. I'll even put this in the strong recommend category.
Ear training is a big part of my musical work. It is also something that I believe leads up into the depths. The doorway to something well beyond us. For the non-musician reader, ear training is the work of being able to recognize what is happening in the music. And recognize it by hearing alone. An almost preposterous thing for some to consider – how could a musician work in any other way? Well, the answer is we can cheat not using our ears all over the place. Buy looking at sheet music or focussing on our fretboards or on our fingerings. We can easily make sound without connecting to, and hearing, that sound.