Hey Paul thanks for sharing! As I go through my golf experimentation, the process I undertake is EXACTLY what you explain above. Just when you think you’ve “got it” go back and watch it again, you’ll find something new or in my case re-discover what I thought I was doing but wasn’t. I am about to post in the gold thread more about this.
There is SO MUCH information tucked away in those early videos and many will, as you did, write the early exercises off as unimportant, YET, they are not recognising the deeply ingrained inefficiency that is ever-present in their playing.
It is becoming more and more apparent that the number one issue with what we are trying to achieve is the learning process itself; a LOT more to come on this one. You are definitely on the right path – and yes, how cool is it with singers. I have done quite a bit of work with some very experienced singers (and woodwind players) and the results are quite profound as they too, are not aware of their inefficiencies.
Cheers,
Greg