Music, which lacks a semantics (because it lacks reference), seems to be able to express, represent, or cause (the choice of verbs is not innocent here) complex intentional states such as irony indecision or resignation. This seems to me one of the bigger mysteries of experience.
I have no light to throw on this problem, if it is a problem. It does seem to me that there is a question about the intentional states that music seems to be able to capture which goes beyond the usual question of the relationship between music and emotion.
I'm sure there's something in that, but the question is how, given that- strictly speaking- music can't refer to anything (other than other pieces of music AFAICS).