Bernie Wilson, baritone member of the rhythm and blues group Harold Melvin & the Blue Notes [1] that produced the 1972 hit "If You Don't Know Me by Now," has died.

Wilson, 64, died early Sunday at Kresson View Center in Voorhees, N.J., following a stroke and a heart attack, his cousin, Faith Peace-Mazzccua, said Monday.

Philadelphia International Records, the former record company for Harold Melvin & the Blue Notes, said Wilson's death leaves Lloyd Parks as the sole surviving member of the group's lineup at the time. The lineup also featured Teddy Pendergrass [2] and Lawrence Brown.

The group produced a string of R&B hits in the '70s and helped define the Sound of Philadelphia.

Soul Singer Teddy Pendergrass Dead at 59 [3]

"If You Don't Know Me by Now" topped the R&B charts and made the top five on the pop charts. The hits that followed included "I Miss You," "Bad Luck," "Wake up Everybody," and the dance track "The Love I Lost," which has been credited as one of the first disco records.

"He left home at 16 as a pauper and came back home a millionaire," Peace-Mazzccua told The Associated Press.

She said her cousin kept performing until a few years ago and hoped to return and sing gospel music.

"Bernard was a very funny person. He should have been a comedian," she said. "He didn't take no stuff and he loved people."

Funeral arrangements were pending Monday.