Via uploader Gianluigi Filippelli:

In 1987 the italian marine researcher Fernando "Nando" Boero published a paper about a new marine jellyfish discovered in California and named "Phialella zappai" in honor to Frank Zappa, his favourite rocker.

In 1988 Zappa decided to dedicate to Fernando the concert on 8th June 1988 at Genoa, and in particular the song "Lonesome Cowboy Nando", a variation of the most famous "Lonesome Cowboy Burt"

You can read the complete story here:

A new one by me, and a fun story. I think I like it even better than the Jimmy Swaggart version.