Justin is a pianist/music teacher (APPASIONATO by scoobygang8)

[am3lee.livejournal.com]

Don't know much about the story,actually. The thing that I remember that Justin is a pianist or a music teacher in Hunter/Gus' school. I've checked the b-j different profession and au tags with no result. Oh, I think the story tittle is something that start with "Appa...". Help,please. Thank you :-D.

FOUND!
"Appasionato" by scoobygang8. Link in the comment. Thank you to darla_isabelle for the quick respon.