A surprise visit from Michael Jackson is just one of several celebrity anecdotes documented in Sir Tom Jones's newly-released autobiography "Over the Top and Back."

The 75-year-old singer said the King of Pop literally popped into his Bel Air home with his sister Latoya some 20 years ago.

Jones said he was waiting for his son and daughter-in-law to come over for dinner when Jackson unexpectedly rang the doorbell.

Once inside, Jackson spent time admiring Jones' photos documenting his career.

"He said 'Wow, Tom, you've had a great career.' And I said 'having'," Jones told CTV's Canada AM on Friday. "It has got to be 20 years ago now when he said that."

And now, at 75 years old, the Welsh singer says he has no intentions of slowing down.    

Known for driving female fans into a frenzy, Jones insists that fame did not change him.

"(Fame) only brings out something that was always there, but you didn't have a chance to bring it out before."

Jones credits his wife of nearly 60 years, Linda Trenchard, for keeping him grounded.

"I never wanted to lose my wife, and she never wanted to lose me," he said. "We're still in love with one another, we come from the same place."

Jones married Trenchard when they were both 16 years old.

He said after learning that Trenchard was pregnant with their only son Mark, there was "no question" in his mind that he would marry her.

"It was a big family get-together," Jones recalled. "My grandmother came to my house said, ‘We have to talk.’ My father's older brother, the authority of the family, came, and they were all talking and trying to decide what was going to happen.

"Linda and myself were in the corner of the room wrapped up with one another. We were oblivious to what was going on," he said.

Jones during that family meeting, his mother said it was pointless to force the teens to hold off getting married, especially considering that having a child outside of marriage in the 1950s "was a big scandal."

"She said, 'Why put them through that when they will get married when they're old enough anyways?'"

Jones continued: "I thought (it was) great. We wanted to be together. You'd have to pry us apart with a crowbar."

The two have remained together despite several well-publicized affairs.

Jones admitted that the couple "got into a few squabbles" when the rumoured affairs would make their way into the newspapers.

"But we always straightened them out," he said. "We are still together and I wouldn't have it any other way, and neither would she."

"The venues got smaller": Jones

Even with a wildly-successful career spanning 50 years, which included selling more than 100 million records and turning out 36 Top-40 hits in the U.K. alone, Jones has had his low points.

"The venues got smaller," Jones said.

"You get a little complacent when you're making a good living and people are coming to see you, but all you're doing is the greatest hits with a few new tunes."

Jones said the "pinnacle" of his career was being knighted by Queen Elizabeth II in 2006 for his service to music, joining the ranks of Cliff Richard, Elton John, Paul McCartney and Mick Jagger.

"That was something that I never figured on," he said. "I was thrilled with it."

Jones said at 75yearsold, he doesn't feel anywhere close to his age.

"When people ask me how old I am, I've really got to think about it," he said. "I'm 75 now…and I'm three-quarters home from the start of the end."