Not rock unfortunately, but these are all music/band-related GLs:
https://www.mangago.zone/read-manga/hello_melancholic/
https://www.mangago.zone/read-manga/murder_girlband/
https://www.mangago.zone/read-manga/kimi_ga_hoeru_tame_no_uta_wo/
https://www.mangago.zone/read-manga/swallow_tail/
https://www.mangago.zone/read-manga/so_do_you_wanna_go_out_or/
https://www.mangago.zone/read-manga/oshi_ga_budoukan_ittekuretara_shinu/
https://www.mangago.zone/read-manga/shells_and_alternarock/
https://www.mangago.zone/read-manga/whispering_you_a_love_song/ (later arc is about a girl who is in love with her older sister ew)
THANK YOU SO MUCH OH MY GOD
Hello!!! Does anyone have a good non-toxic/non-rapey rock themed Yuri rec? I've already read TGSWIIWAG and Rock it Girl, but I adore this trope sm and just can't find any more of these