The effect you require does have a precedent, in Hans-Martin Linde's _Music for a Bird_. There, the hand over the beak is in constant motion, making an extreme form of pitch vibrato. It is notated with a text instruction and a wavy line above the tone. Since you are after fixed pitches instead of a vibrato, I would recommend notating the desired pitch precisely on the staff, with a "+" sign above each tone (the effect is akin to stopping a horn in that the pitch goes down with increased covering), the desired fingering below each tone, and, as always, with a text instruction.
Daniel Wolf Budapest _______________________________________________ Finale mailing list [EMAIL PROTECTED] http://mail.shsu.edu/mailman/listinfo/finale