The Gakubu Section, Shikibu-shoku Department of the Imperial Household Agency, defines it as the numbers played by the Gakubu Section, Shikibu-shoku Department of the Imperial Household Agency (except for Western music).
国内の宮内庁式部職楽部による定義では、宮内庁式部職楽部が演奏する曲目の内、洋楽を除くもの、とされる。