"Senile Songster" sounds like a good new lable if you don`t like the "old school" thing - put that on your posters/press kit.

Alternative: "One-man-senior-boy-group"

Sincerely, this sounds like a good idea for a song. Especially since you are good at writing that kind of songs.

You might use the line

"I`m not one of Fred Dibhah`s fucking steam engines: I stopped smoking years ago"

for a start, but you might have to explain who Fred D. is/was.