This percussion instrument is struck not by each flat surface of shakubyoshi, but by the flat surface of the left piece and the edge of the right piece held in an upright position.
また楽器の平面同士を当てて打ち鳴らすのではなく、左の笏拍子の平面に対して右の笏拍子を垂直に立てて構え、打つ。