“God’s Love” — Bad Religion (found in Is Belief in God Good, Bad or Irrelevant? by Preston Jones and Greg Graffin)
This one is non-fiction, but I picked it because Greg Graffin (the lead singer and songwriter for Bad Religion) is a pretty uniquely interesting musician, and also not such a bad thinker in his own right. And having had the pleasure of both interviewing Greg and watching him play live with his band in the same day, I can also say that hearing him sing his thoughts about belief and faith — rather than just having them rattled off in conversation –makes a difference when it comes to understanding the guy a little better. In this case, “God’s Love” (which is an ironic title, if you don’t know anything about Bad Religion) is quoted, along with a bunch of tunes of his, in this book that consists simply of an email correspondence between Greg, who’s an atheist, and Preston Jones, a devout Christian professor.