10 years ago by
A Pianist
EXCELLENT questions!
1) When the muscular efforts needed to move fingers and thumb are effective, fingers and thumb will not depart so far from their natural alignment (except in a cat-scratch tight curl for instance). Skeletal playing is playing that uses effective skeletal alignment to maximum efficiency.
2) The grasping comes first but the arm is so close behind that one could be forgiven for thinking they are simultaneous. They are VERY close together in time. If you even begin a slight grasping, the arm is immediately in movement, because fingers and arm are attached. It's not so much that the arm moves later in time than the grasping action, but that the cause and effect relationships are maintained. Grasping is cause, arm effect - MOSTLY. Having said that, sometimes I do practice the reverse, creating a perceptive illusion in myself that the arm is indeed cause and grasping the effect. It can "smooth things out." But it is an illusion.
AFF