A total break with tradition here; guitar and vocals, no piano. Not really impro either, but true to the original premise: first take, no cuts. Song I haven't played in over ten years.
First few lines may be a bit confused, finding a string not as much in tune as I want it to, and if there's one thing I can't stand... So it had to be retuned as I went on. Also the bridge got me somewhat mixed up, but never mind the excuses.
It's gotta be the weirdest and most original version I ever did of this. Just like a cat would, I guess.
And remind me again of the fact that one microphone is not sufficient for a good balanced mix. And see if I care. ;-) (actually I do, but never mind just the same)
Illustrations: Cat's Eye Nebula, from Wikipedia