Also, with preferably more than 3 chapters
Maybe you can try this one .. It also has an anime so you better watch it :) (sorry for my bad english) hehe
http://www.mangago.zone/read-manga/fujimi_orchestra/
http://www.mangago.zone/people/tag/53237/classical+music
I wouldn't recommend Transfigured Night (although I looove this piece xD), it's too dark, same for Ludwig II.
Thank you!
Can anyone recommend a yaoi/shonen-ai where classical music plays an important role (with pianists, cellists, violinists, etc.)? I've already read "Sankaku Opera", but I'm looking for something less dark and more romantic...