The more songs I hear from Sufjan, I realize that with that guitar in very many of the songs, it has that Frontierland feel that you mentioned, although I don't think you mentioned Sufjan. But you did say something about Iron and Wine and there is maybe a couple of songs that I can imagine due to the guitars. One of them is Resurrection Fern.
Jacksonville - Sufjan Stevens
Yes! Resurrection Fern is a great example. Now you're getting it!