"If You Do n't Know Me by Now '' is a song written by Kenny Gamble and Leon Huff, and recorded by the Philly soul musical group Harold Melvin & the Blue Notes. It became their first hit after being released as a single in 1972, topping the US R&B chart and peaking at number three on the US Pop chart.
who wrote the song if you don't know me by now
Kenny Gamble Leon Huff