This was a bubble-gum, unattractive song by its original artist - who I will not even link to. When I first heard Alison Krauss sing it, I was floored. Somebody in that band has the remarkable ability to hear the beautiful potential even when the vessel is flawed. That may be rarer than the ability to write good songs. There's a sermon in that somewhere, about how God sees us and we should see each other.
The chord changes at about 1:15 are exactly the sort of subtle but dramatic improvement that such folks can bring.