Billy Paul, a jazz and soul singer best known for the No. 1 hit ballad and Philadelphia Soul classic Me and Mrs. Jones, died Sunday.

Paul, whose career spanned for more than 60 years, died at his home in Blackwood, N.J., his co-manager, Beverly Gay, told The Associated Press. Paul, 81, had been diagnosed recently with pancreatic cancer, Gay said.

Known by his beard and large glasses, Paul was one of many singers who found success with the writing and producing team of Kenneth Gamble and Leon Huff, whose Philadelphia International Records also released music by the O'Jays, Harold Melvin & the Blue Notes, and Lou Rawls.

Me and Mrs. Jones was an extramarital confession and a characteristic Gamble and Huff production, setting Paul's thick tenor against a lush and sensuous arrangement. Many fans best remember the moment when Paul's otherwise subtle vocals jump as they reach the title words, stretching out "Me" and "And" into multiple syllables and repeating "Mrs. Jones, Mrs. Jones, Mrs. Jones." (Paul himself was married to the same woman for decades).

'1 of the greatest love songs ever recorded'

Paul's voice made him "one of the great artists to come out of Philly and to be celebrated worldwide," Gamble and Huff said in a statement late Sunday.

"Our proudest moment with Billy was the recording of the salacious smash Me and Mrs. Jones. In our view, it is one of the greatest love songs ever recorded," they said.

The song was one of the top singles of 1972 and brought Paul a Grammy the following year for best male rhythm 'n blues performance, with runners-up including Ray Charles and Curtis Mayfield. Paul remained identified with the song for the rest of his life.

Paul continued to perform live until he fell ill and his manager said he had been lining up numerous appearances at the time of his death. Among his favourites in concert was a cover of Prince's Purple Rain. Prince died last Thursday.

It doesn't rain it pours! Another brother has fallen. Rest in peace Billy Paul. Your music will forever live in us. <a href="https://t.co/hVp1JTDEk3">pic.twitter.com/hVp1JTDEk3</a> —@xolilegama1

He was born Paul Williams but later agreed to his manager's suggestion that he change his name to Billy Paul to avoid confusion with songwriter Paul Williams and other musicians with the same name. A Philadelphia native, he sang much his life, performing with such jazz stars as Charlie Parker and Dinah Washington and being featured on a handful of singles while still in his teens.

Paul was drafted into the military in his early 20s, and found himself on the same base in Germany with a couple of famous show business names, Elvis Presley and Gary Crosby, Bing Crosby's son.

"We said we're going to start a band, so we didn't have to do any hard work in the service," he told bluesandsoul.com in 2015. "We tried to get Elvis to join but he wanted to be a jeep driver. So me and Gary Crosby, we started it and called ourselves the Jazz Blues Symphony Band."

Socially conscious, sexually explicit lyrics

By the mid-1960s, the Beatles had inspired him to incorporate more rhythm 'n blues into his singing and he had found a new home for his recordings after meeting Gamble at a Philadelphia music shop. His early albums with Gamble and Huff, including Ebony Woman and Going East, sold modestly, before Me and Mrs. Jones briefly made him a superstar.

Paul faced numerous obstacles following his biggest hit. Radio stations resisted his more socially conscious follow-up song, Am I Black Enough for You and the Rev. Jesse Jackson was among those who objected to the explicit Let's Make a Baby.

From left to right, singer Bunny Sigler, song writer and producer Leon Huff, singer Billy Paul and song writer and producer Kenny Gamble attend A Special Evening With Gamble and Huff at the Sony Club in 2007. Paul, known for the hit song Mrs. Jones and Me, has died at the age of 80. (Steven A. Henry/Getty )

Years later, Paul sued Gamble and Huff and other industry officials over unpaid royalties and was awarded $500,000 by a Los Angeles jury in 2003.

Paul is survived by his wife, Blanche Williams, with whom he had two children. Although he endured many difficult moments with Gamble and Huff, he would look back on those years as a lost golden age.

"It was like a family full of music," he told bluesandsoul.com. "It was like music round the clock, you know. And I reminisce and I still wish those days were here."