Can anyone help me find this WEBTOON

I read this webtoon like 5 years ago but I cant remember the name of it but I can only remember this:

(I think it was an original I might be mistaken)

It was a romance between two high schoolers (girl and boy) who were in band class together, I think one of them played one of those instruments that has a spit valve. (weird thing to remember Ik)

It might’ve been a love triangle because I think there was another guy who the girl had a crush on.