Paul Simon, "Hearts & Bones" - C/D?

The solo-acoustic “Train in the Distance” is one of my favorites of any of his songs.

I can see that. I always liked parts of that song, but it feels underdeveloped on the studio recording. I vaguely recall some strings popping up at the end - they felt kind of thrown in there and drove home how rough the album sounds, like they were still workshopping ideas rather than figuring out what they really wanted to do and taking the usual care to execute those ideas.