Hibike! Euphonium, Love Live! Sunshine!! 2nd Season Recommendations
Both animes center around music and the majority of the main cast is female and in high school. The main goal the characters strive to achieve from each anime is winning their respective competitions.
Fantastic animation, amazing soundtrack (as expected of animes of the music genre), great voice acting, and a touch of yuri in both animes if you don't mind it.