Anything by Alan Mencken, most of them with lyrics by Feldman. He is a brilliant composer. He uses the subtle technical parts of a composition to the story. I pick up something new every time I listen to a soundtrack he wrote. The villain song in Frozen, Love Is An Open Door, is an excellent example. For one thing, they never actually say that Hans loves Anna. They say that love is the open door...for him to exploit her loneliness for his own gain. He says as much later, in fact.
The romantic lines of the song are all sung by Anna, with Hans singing lines that are, at best, responding to her with what he thinks she wants to hear. For instance, this exchange: Hans "we finish each other's..." Anna: "sandwiches!" Hans: "That's what I was gonna say!". Really, now.
And, the real relationship between the two is hidden in the pitch, timing, and the key. The song is purposely written flat. That makes it sound...just a little off. When they echo each other they are just a little slow, just a little awkward. There's a beat or more before the one responds to the other, and they usually do so on a dissonant key. That's on purpose, to show how badly matched they really are, and that the relationship is an illusion.
Compare that duet to the duet at the end of First Time in Forever. The sisters hadn't seen each other in years. They were both scarred by years of neglect and had no reason to feel a connection to each other. Yet, they are perfectly in sync. They echo each other exactly, and the harmony is heartbreakingly beautiful. This speaks to the love that is still there, that ultimately wins out over the fear they were taught. This is mirrored in the scene at the ball, where they both go "mmm chocolate" at once. The song just underscores that.
And I could write books detailing this kind of story-telling brilliance in every single song he wrote. But this is my favorite current example