Well, I mean, I wouldn't call them "punk," but Fun. (and even some stuff from The Format) has some songs that seem like they could be used in a musical to me. The prechoruses in "Be Calm" for example. But, I've never really heard a band the way you described so I really don't have any good help for ya!
Yeah I havnt even found much myself. I just heard a few songs that put ideas in my head how awesome that would sound. Like I said We're so far away is like the closest thing ive found so far! But thanks