There is an interesting discussion about the position of left hand, fingering, and the way it moves on the neck, and how it influence your musicality as a guitarist.
First I heard it from great Czech guitarist - David Dorużka, who told me, that changing the position of left hand from classical to more loose, with visible thumb, and using most of the time only 3 fingers (without 4th) influenced his phrasing and sound in positive way.
At first it sounded strange to me, because I always looked on the instrument only as a medium of your inner voice, so how the way you play can affect your musicality? but more i think about it, the more i get confused.
Basically, in jazz there are 2 groups of players, when we are talking about left hand technique:
- classical trained players like Adam Rogers and Lage Lund
- definitely bigger group of great guitarist like, Metheny, Scofield, Rosenwinkel, Bernstein, Moreno etc. etc.
So what do you think, does it make any difference how you play with your left hand? Can it really influence your musicality? As you know, changing technique / position of hand is a lot work to do, is it worth it?