"Suddenly Frodo noticed that a strange-looking weather-beaten man, sitting in the shadows near the wall, was also listening intently to the hobbit-talk. He had a tall tankard in front of him, and was smoking a long-stemmed pipe curiously carved. His legs were stretched out before him, showing high boots of supple leather that fitted him well, but had seen much wear and were now caked with mud. A travel-stained cloak of heavy dark-green cloth was drawn close about him, and in spite of the heat of the room he wore a hood that overshadowed his face; but the gleam of his eyes could be seen as he watched the hobbits."
I'm sure if he really worked on it, he could produce a couple more great songs, but why? Nothing he produces will be regarded as good as his early work for the sheer fact that people hold it in some form of nostalgia. I've seen older people sing well, but even then, you can tell age gets to them eventually.
I think the fact that he got sober and he stopped working with guys that would push him. What made some of his early stuff so great was working with guys who would push him. Look at what happened with the 3 Berlin albums.
For some very strange reason, looking at that dog reminded me of the music video for "Never Gonna Give You Up." I honestly have no idea why, other than perhaps the reddish-brown fur of the dog reminding me of Rick Astley's hair, maybe???