If I remmber, Hatsukoi no Kaeru Shima is just that but whitout the band plot. There are also a band related series by Janome, i think the first story of a trilogy is getting an anime adaptation, but i might be wrong. But you can also check out Hakase and Suzumaru Minta works both authors have a lot of wholesome stories. All of them are pretty popular so you might stumbled on it before
Theres pink heart jam which is also about a guitarrist and vocalist in college
i read it a while ago i love that story
THANK YOU SO MUCH
Dekisokonai no Love Song mc kinda same vibe hairstyle with kanae in pink heart jam. Idk if fluffy for u. Lol. Hehe
if anyone has recs that are similar to this one, (good art, short, simple, fluff) PLEASE TELL ME