They were looking for actors - real actors - who could play instruments. There was a lot of improvisation and scene work involved in addition to the music. The auditions went on for a long time.

青竹 云海 晨光 星夜 荷风 晴雪 秋山 听海 沙丘 森语 梅影 花野 听雨 晴窗 暮色 橘光