I know there is a quarter tone notation, but is there a symbol for music score that will simply say over/under pitch? I think quarter tone notation might be too strict/rigid in music arrangement that is not quarter tone at all, just some solo parts requires this specific intonation.
I'm transcribing the vocal part of the song. She sings some notes deliberately over/under pitch, and I have no idea how to smuggle this subtlety into violin part. Should I care about such subtle things at all? Or leave it "dry" and rather rely on the performer's interpretation?