I just like you even more for loving Immortal Beloved. I’d be happy if that were the only romantic drama ever created. There’s no real need for more.
I do think you missed one “speaks to people”, the understanding of the artist. I’ve been searching for the correct word, understanding works best. I started out with “passion” but that doesn’t seem right. It’s how well the artist understand the emotions they are trying to invoke with the music. Someone can play/sing with a lot of passion and still leave you with the feeling they didn’t get it. Or someone can play a song, even — specially — if it’s a cover of an other artist’s song, and you just feel they got it.
I would never want to suggest that either Reznor, or Simon & Garfunkle were lacking passion. Or even sincerity. But they did not understand the songs they created as well as the artist who would go on to cover them.