My question is off topic. I hope it will not be a problem.
The following is one excerpt from the Sitt book, 20 studies in Double Stops.
Why in the first three measures the G, D and A are written as g4~4~4~4 d4~4~4~4 a4~4~4~4 instead of g1 d1 a1? Any idea?
Ciao, g.