In commemoration of the impending 50th anniversary of the release of Sgt. Pepper's Lonely Hearts Club Band, I am proud to present you with ...
what I believe is the first cover version of any of its songs to be released. It was released in June 1967, same month as the original album, and it was produced by the same George Martin who produced the album. It's a comic actor and musical comedian artist of his (remember that Martin got his start in comedy records) named Bernard Cribbins, singing "When I'm Sixty-Four."
I haven't directly compared this with the original, but it seems to me as if George Martin just took the backing tracks from the original recording, stripped out the backing vocals (none too well), slapped the new lead vocal on top, and called it a day.
I gather that Bernard Cribbins is well-known in the UK, but he's not so familiar over here. I had to be reminded who he was, and who he is to me is the comic actor who played Mr. Hutchinson, one of the most memorable guests ever to stay at Fawlty Towers. Yes, he's this guy.