Hi Maraki.
It depends on the style you dance. If you dance American Cabaret or different fusions, then there is no rule for that. If you dance Egyptian style, there are some unwritten rules, about what movements fit to what instruments, but there are usually more than one movements that fit. You have a repertory of movements that fit an instrument and you choose the ones which express you. You usually do the movements which harmonize with the energy of the instrument. Lydia described the matter quite well. But the longer you deal with the Egyptian style, the more you do this thing automatically, you just cannot do different
