Is it necessary to place all the three fingers (in their respective positions as in first finger on 1st position, second on the 2nd position so on) while playing the 3rd position or is it okay to put just the third finger in 3rd position??
I find it easier to put only the third finger in 3rd position, especially when I have to shift between strings but my teacher insists me to put all the fingers down on the fingerboard. For instance, while playing D on A-string followed by A on E-string. Which one is more advantageous and in what ways? Thank you
Placing the fingers down in order helps build secure and consistent intonation (remember, intonation is part muscle memory) as well as finger independence.
It helps with framing of the fingers too, to get use to them staying over the strings when not on them. I found it a little difficult to catch a note in time when the index finger is pointing straight up in the air (my bad habit).
The mind loves being ahead of everything else(your mind is at least 2 seconds ahead of your conscious), but when things lag, and you practice in 'real time' then the mind doesn't like this: it is too slow for it. So, if you were to only place one finger down at a time and not setting up the next finger to be played, this will be a slow tedious process for the mind. The question should be: should we be one, two or three finger placements ahead of a note being played now? If you can,always have the next finger down, or hovering over the string to be played next. Being two steps ahead is better, if you can. Is 3 steps ahead necessary or better? I would say generally, no, and this is because the hand often tightens up(creates tension), and movement slows. In my experience, I find it better to only keep 2-3 fingers down at a time. As a general rule, I rarely have 1st finger down when using the 4th, but if 1st needs to be down than 2nd and/or 3rd fingers are off the strings.
When to hold fingers down, or pre-place them, is something that will eventually become instinctive --
When fingers are lifted, they should usually remain hovering over the notes they have just played, or will soon play. For vibrato, small hands (but not the thumb) can shift just a little to balance on the vibrating finger, but without losing the feeling of the coming intervals.
On an ascending series of notes, such as 1, 2, 3, it makes sense to keep the bottom fingers placed as you climb the notes. However, if you are going from 0 - 3, without anything in between, it makes zero sense to place all 3 fingers. This is PARTICULARLY true between two fast notes, where by trying to slap on all 3 fingers in an instant, you will either have to slow down your tempo or incorrectly place the bottom fingers due to the constraints of time. Not only that, but now those bottom fingers can't be easily adjusted - as they've already been placed - so it's best to only keep fingers down where it makes sense to, such as in the case of an ascending scale (0 1 2 3).
Thank you everyone!