thank you so much to Elizabeth Volpé Bligh and Carl Swanson!!! 🙂
I try to summarize:
1 the symbol for muffled sounds it’s only for the left hand and I play from the symbol to the first star for natural sounds
2 the dot over the note indicates two things: for the left hand the muffled sounds and for the right hand a pretty and fast staccato
so we have three sounds: muffled, staccato and natural with all the expressive nuances.
and we can say that the study shows how to make a short sound with right and left hand in two different ways.
I see Salzedo’s method for harp and it is very interesting! thank you!