壱越 いちこつ Meanings Noun fundamental tone in the traditional Japanese 12-tone scale (approx. D) See also: 黄鐘 (こうしょう). See also: 十二律 (じゅうにりつ). Kanji 壱 one. Read as イチ. 越 go over Words containing 壱越 壱越調 (いちこつちょう) ichikotsu mode (one of the six main gagaku modes) Word lists Music Jinuma: Japanese Dictionary · Word lists