Sho player Ko Ishikawa studied Japanese traditional Gagaku music under his masters Mayumi Miyata, Hideaki Bunno and Sukeyasu Shiba. He is a member of Reigakusha Gagaku Ensemble. He has been performing not only Gagaku music but also contemporary and experimental music. He is widely acclaimed on the national and international scenes.
He had participated in the projects of Yoshihide Otomo, Ryuichi Sakamoto, Mamoru Fujieda, Toshiyuki Omori, Julio Estrada, Evan Parker, Bozzini Quartet, Antoine Beuger, Magnus Grandberg, Giorgos Varoutas.