Hishakaishindo
The angst feels strong with this one... MC is a musician and became roof friends with another student who is a photographer. Both characters are kind of distant but get closer through interactions on the roof. MC is a bit of a player with the ladies, including the school nurse. But the MC’s mind was on someone else
Kimi no Oto ga Nari Yamanai
Igarashi is always listening to music in school and never socializes with his class mates. Sanjou is a very popular guy in the rural school but is getting tired of girls who don't like the same music as him. Sanjou gets over excited after finding out that Igarashi likes the same music as him. Sanjou goes to a club where the music exhilarates him and he sees that the DJ is non other than Igarashi. Sanjou takes Igarashi home after he got drunk and got kissed by him.
Sekai no Oto ga Shinai
Seme bears a piano being played and is making the student teach him how to play that song
Yoru To Asa No Uta EC
Nibiiro Musica