Playing the roll on A4
Whats the prefered way of playing rolls on the note of A4 (open A string) on the fiddle? Do you shift position on the D string or do you sort of wiggle the bow between the A and D string?
Heres an example (starts at 1.17):
Seems impossible to do the rolls smoothly if you do not shift position, but i hear shifting position is frowned upon?