The American soul singer Billy Paul has died at the age of 80.
He was best known for his 1972 hit Me and Mrs Jones, which won a Grammy award and reached number one in the US.
A statement on his website said he died on Sunday of a "serious medical condition". The NME music magazine has reported that this was pancreatic cancer.
Mr Paul, who was born as Paul Williams in Philadelphia, helped shape the course of modern R&B music.
In his youth, he performed alongside soul legends including Charlie Parker and Nina Simone.
His biggest hit Me and Mrs Jones, about an extra-marital affair, has been covered by artists including Michael Buble and Hall & Oates.
In 2003, Mr Paul won a $500,000 (then £250,534) lawsuit for royalties owed for it from 1994 to 2002 by Assorted Music.
The company said it was an accounting issue and not a case of trying to cheat anyone out of money.
Mr Paul is survived by his wife, Blanche Williams.