Up The Lazy River, a blog about “Learning to play the ukulele,” brings up “SJI” in a post about minor chords. Excerpt:
These chord groups are fun to play and practice on a regular basis. They’re grouped in the way you will likely find them in songs, and they almost sound like songs in themselves. As a matter of fact, the first group Dm, Gm, A7 and back to Dm are used in St. James Infirmary, a well known traditional American sad song.
Of course, as it’s played in New Orleans, it starts sad, but pretty much turns into a raucous affirmation of life. In a way that’s a little jarring if you think about it. Which as you know, I have, way too much.