What song played backwards says "Paul is dead" and who sings it?

The Beatles... At the end of the "I'm So Tired" track, a bunch of seemingly meaningless syllables are uttered. When you do the 'ol classic backwards playback, you hear "Paul is dead now, miss him, miss him."

Strawberry Hills Forever, when you play it backwards, it is the strangest thing, you can hear the British ambulance sirens coming (during the interlude), and then if you listen carefully, you can hear them say "Paul is Dead".
I first heard this in about 1969 or so during a radio analysis of the rumor in Wichita, Kansas and when they played it backwards, and I heard it, I just about jumped out of bed in a scare, it sent shivers up my spine. Even though the rumor was untrue, at the time, Paul had been absent from the public eye for quite awhile, and this song backwards was just freaky. Go ahead, listen for yourself.

This question appears to be confusing playing a song backwards with the "Paul is dead" urban legend.

"Paul is dead" is an urban legend alleging that Paul McCartney of the British rock band The Beatles died in 1966 and was replaced by a look-alike and sound-alike. Evidence for McCartney's death consists of "clues" found among the Beatles' many recordings, most of which are treated as if they were deliberately placed by The Beatles or others—as if McCartney's death was a mystery to be solved by the public.

https://en.wikipedia.org/wiki/Paul_is_dead

There are so many examples of "Paul is dead" backmasks. For example, Revolution 9? The line "number nine" backwards is "turn me on dead man". Let It Be? "let it be" backwards is "he's been dead." All Together Now? "all together now" backwards is "i buried Paul". And the end of I Am the Walrus? "oompah oompah stick it up your joompah" backwards is "ha ha paul is dead" I, for one, believe the real Paul is live and well and this whole thing is an elaborate hoax perpetrated by the Beatles (especially John Lennon) to perhaps boost album sales. However, looking for clues and reading the background of this hoax is quite interesting.

It may not be widely known in the States, but "oompah oompah stick it up your joompah" is a very old UK institution. It can be used in many ways - both polite and less than polite. It would be well known to all the Beatles and quite likely to be used as an interjection by Lennon. It is rather old-fashioned (and was then) but that wouldn't stop Lennon.

The phrase when played forward is uttered by John Lennon. He says: "Monsieur, monsieur, how 'bout another one?"