Uhm, best kdrama that fits the description is Beethoven’s virus lol.
My love for classical music goes up by a notch, my appreciation for it grows deeper. I learned more beautiful classical music, and I get to know the passions these people have for their music. The love story is heart breaking. A drama that is realistic, yet dreamy (all these people are dreamers lol).
Other than that, it will be a Cdrama, but I think the description asks for kdrama :)