David Oistrakh sul tasto
I wonder if anyone could watch some David Oistrakh on Youtube and tell me if you think he plays sul tasto more than you'd expect?
The great violinists broke all the rules. Because they could.
There are rules?
When your violin teacher says, "Don't play with your bow over the fingerboard," that's pretty much a rule, no?
No, not a rule - but if you want a softer sound with less overtone sound that is one way to get it - especially if you forgot your mute.
My teacher generally encourages, for concertos, to keep the weight of the bow in the string, but to shift the sounding point to get a different color. That works well on my violin, which doesn't seem subject to the usual limitation of many violins that require a sul tasto stroke to be fast and light to sound good; I can play near the fingerboard with a slow bow speed and significant weight in order to get a piano-colored sound that will nevertheless project through an orchestral texture.