I hope that whatever you decide goes well today, LT. Skimming through your thread, I'm wondering how much of it is about your T's reaction to the music vs. your reaction to it in his presence. It sounds mostly like a way of eliciting emotion for you, and his reaction to the actual content of the song doesn't have to be all that important. Being able to process what comes up for you in response to the song, in an immediate way, seems like what you're trying to achieve.

ETA: Not to dismiss the importance of what it's like for you to share it with him. But again, I think that's something you can process that's independent of his reaction to the music.