Again, another cover. Unlike Johnny Cash, Willie isn't guaranteed to take a song by singing it. I like Willie's take on Gravedigger (even if it's not better than Dave Matthews), but Come On Up To the House (off Heroes) shouldn't have happened. This song is another excellent cover. I had never heard Pearl Jam's version of this song until just now.
As I've said before, a cover must improve on the original or take it somewhere new. Here, it's the presence of Lukas, and the love the two have for each other. Also, this song (and several others) show an awareness of Willie's own mortality (he was having lung problems that were helped by stem-cell therapy in 2015).