1-line staff. write as 8ths (or sixteenths according to the piece) for struck, and tremolo for rubbing. in the notation legend (percussion instrument/object list), write "2 Sandpaper blocks (struck and rubbed together)".
if you are still worried, on the first instance of the struck notes, just for security reasons, write "(strike)" and leave it afterwards. percussionists will know what this means, and the tremolo will be enough for them to know that the rubbing technique is called for thereafter.
if the rubbing is NOT a circular, sustained motion, you could instead write the struck notes as 16ths staccato and the rubbed notes as 8ths tenuto.
are you specifying what grit to use? 40-60 totally coarse, can rip shit up great (like legs...) has a very raucous sound, while 100-120 is a nice clean smooth sound, 220 and above for those really fine moments, blends well with air noises (eg. wind through instrument).
this is shit that was not in the orchestration books i read but of utmost importance 8^)
-- shirling & neueweise ... new music publishers mailto:[EMAIL PROTECTED] :.../ http://newmusicnotation.com _______________________________________________ Finale mailing list [EMAIL PROTECTED] http://lists.shsu.edu/mailman/listinfo/finale
