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.\n\nBased on this passage, when did if you don't know me by now come out? Okie... think carefully first, then make a decision:
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To answer the question, consider the following: 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. So, the answer is 1972.
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