i get colours (instinctively, as a kind of synaesthesia) and performative gestures (learned) from music. hearing a piece for me is imagining performing it, & at times imagining the physical sensations of bow touching strings, air flowing through tubes etc—at least, if the piece is good. this tends to annoy people who sit next to me at concerts.
people try to explain the emotional states music suggests with ideas or pictures or stories they can relate to. they always have. (time was each classical mode was associated with a different temperament.) i think people basically don't understand or believe that pure sound alone can generate emotion, due to coming to view music as a commodity—"something to _____ to". it's not understood that music can have power and, in consequence, a lot of the popular music produced nowadays doesn't have very much power, & falls by the wayside while the classics of the 1960s and 70s remain as popular as they ever were.