K-ON is about 5 high school girls who become friends through the Light Music Club. Yui the lead guitarist, Tsumugi the keyboardist, Mio the bassist, Azusa the rhythm guitarist, and Ritsu the... Read allK-ON is about 5 high school girls who become friends through the Light Music Club. Yui the lead guitarist, Tsumugi the keyboardist, Mio the bassist, Azusa the rhythm guitarist, and Ritsu the drummer. K-ON is the story of 5 aspiring musicians and their journey through high school ... Read allK-ON is about 5 high school girls who become friends through the Light Music Club. Yui the lead guitarist, Tsumugi the keyboardist, Mio the bassist, Azusa the rhythm guitarist, and Ritsu the drummer. K-ON is the story of 5 aspiring musicians and their journey through high school together.