The central principle /9November 17th, 2019
Still on the subject of oversimplifications.
The central principle is not applied in any one specific way. In fact, it’s applied vertically as well as laterally and all the angles in between.
The main point is that it’s a force that comes from your hand and forearm as opposed to the force that comes from the fingers.
Vertically and laterally here refer to the relationship of the force to the strings. Vertically would mean a slight pushing into the strings while laterally across the strings.
I have written about the push-stroke, a concept I learned from Julian Byzantine.
The force behind the push-stroke is the central principle applied vertically. When you push into the strings, you’re pushing in with the hand.
I’ve also written about the snap and the pull-stroke.
Here, the application is laterally across the strings.
So how do you know when to apply the force vertically and when to do it laterally?
It’s dependent on the technique involved.
I find that rest-stroke scales tend to be more lateral while arpeggios and tremolo vertical.
This explains why the bouncing exercise I have written about in relation to the tremolo is so effective in developing the technique.
When you bounce your hand, you’re practicing the vertical application of the central principle. The bouncing movement comes from the hand and forearm.
Again, it’s important to point out that even when the force is applied vertically, there’s still some lateral movement involved and vice versa.
It’s never one pure simplistic motion.