Yeh, there's definitely some twee fics, but more often I find that people have very odd misconceptions about what conservatory or professional musicians/their schedules/their lives are like. The best ones I've read are ones where they're just treated like normal people who have schedules and stuff and childcare responsibilities and just have to live their lives like anyone else, and then the music is barely more than a background flavor. I can deal with that WAAAAAY better than a lovingly described solo concerto told from the pianist's POV or something, just. Please do not.