And as for multi-tasking, I put drum kit ahead of organ for complexity. I’ve tried both and decided both were beyond what I wanted to put effort into; I stick pretty much to melody instruments, although I developed my practice method when studying classical guitar, which has the fingers on both hands doing complex tasks that are separate but must still coordinate well. I have found that the more complex the instrument, the better the method applies.

But your article explains why I am having such trouble learning a new language during my commute; of necessity I have to pay attention to my driving, and I’m having memory problems with the new language. Never was much of a multi-tasker!