K-On!'s story revolves around four Japanese high school girls who join their school's light music club to try to save it from being abolished. However, they are the only members of the club, and at first Yui Hirasawa, the main character, has no experience playing musical instruments or reading sheet music. Eventually, she learns how to be an excellent guitar player. The rest of the club helps her to buy a guitar, and they perform successfully at the school festival. Since then Yui, bassist Mio Akiyama, drummer Ritsu Tainaka and keyboardist Tsumugi Kotobuki spend their school days practicing, performing, or just hanging out together. One year later, the club welcomes another guitarist, an underclassman named Azusa Nakano.