K-On! (2009 - 2010)

The Japanese animated series "K-ON!" tells the story of carefree high school student Yui Hirasawa, who must choose which school club to join. At the same time, Ritsu, Mio, and Tsumugi, who are obsessed with the desire to create their own music group, join the Light Music Club. However, all the members of this club graduated last year, and according to school rules, the club must have at least four participants. Yui Hirasawa joins the senior students.