I think it's only a scrap of a song that they're always working on in these 70s songwriters sketches, but there's other song fragments in Snuffbox that contain the lyrics and are titled "Everything Went Dark." You can look them up on youtube. Maybe Berry used the tune somewhere on one of his albums, but I can't recall it if he did.
Because the world could only handle so much perfection. There's a reason that the theme song to this show was randomly playing in a scene in the most recent Dredd movie.