Thatās because those videos miss the mark. I can admit when we flub the ball. That was one of those times! I feel bad that we overcomplicated that presentation, and in certain respects just got it plain wrong. Steve is such a great guy he had to sit through that and was probably just as confused as everyone else.
We got it right soon after in the Albert Lee videos. Those are on point, and to date our best explanation of what wrist-oriented crosspicking actually is. Yes, itās black and white. Itās that the two dimensions of the wrist trace the semicircle, and they do so in such a way that the downstroke muscle chain is completely distinct from the upstroke muscle chain.
In other words, stringhopping is painful and speed limited because both the upstroke and downstroke use wrist extension. Itās the same movement hammering away all the time. So itās not actually alternate picking because the muscle groups donāt alternate.
In crosspicking, the downstroke uses one set of muscles and the upstroke uses their antagonists, so everybody gets 50% rest, same as if youāre doing any other kind of alternate picking. If youāre supinated (Lee, Morse) then the downstroke uses ulnar deviation and wrist extension, and the upstroke uses radial deviation and wrist flexion. If youāre pronated (Tuttle, Grier, Wood), then itās the reverse. The downstroke uses ulnar deviation and wrist flexion, and the upstroke uses radial deviation and wrist extension.
And thatās a mouthful. In short, youāve basically got wrist movements tracing a semicircle thatās mechanically efficient so nobody gets worn out.
How do you learn these movements? Well, consider that only Steve was aware he was doing this, and heās a mechanical nerd and a tinkerer and a pilot and all those other great things. All the other players are not aware theyāre making these movements, and only sense the movement of alternate picking.
So my thought is that there is probably a way to teach at least some of these techniques that simply has the student place the arm and wrist in a certain position, and then ādoā alternate picking, just the two opposing diretions of what feels like a picking movement, while letting the hands sort out the rest.
Thatās my thought! Weāll be back on this topic soon, even though itās sort of a work in progress, but I think weāve spent enough time thinking about it that we can at least supply a nice head start for everyone.