The amount of weight affects the sound, and therefore jiuta performers usually use koma of various types depending on the character of the instrument, the tension in the leather, the weather and the melody of the music.
おもりの重さによって音色も変わって来るので、地歌の演奏家は普通、楽器の癖、皮の張り具合、天候、曲調などに合わせいくつもの駒を使い分ける。