I'm not good with music, so I can't help here :( But the thought of a fic that's very Tony-centric is actually really, really exciting to me!! I actually tend to love fics like that, where one of the two getting together are explored and you really get into their heads, more than any other type, really. It's delightful to spend a fic really feeling like you're exploring the character, which it sounds like is what will happen in this fic?