This made me feel better about sometimes imagining myself conducting or players playing their instruments while listening to music.
I guess I just try to perceive all the sounds, and it helps to have clear "imagined" sound representations.
But then again, sometimes I experience sceneries or images, sometimes emotions and sometimes the music seems to range from being totally "flat surfaced" (I don't mean musically shallow, but visually) to sharp as spikes. And even sometimes I can associate colours with certain pieces.
I haven't found any tendencies or what exactly in those pieces provoke different imagined visual experiences, but it truly adds to the listening experience.