(Saturday, March 29, 1975) — “Lady Marmalade” by Labelle peaks at #1 on today’s Billboard Hot 100 singles chart for one week.

The song is best known for the French lyric “Voulez-vous coucher avec moi ce soir?” (“Do you want to sleep with me tonight?”) in the refrain.

“Lady Marmalade” is about a man’s sexual encounter with the titular prostitute, but Patti LaBelle later claimed that she was completely oblivious to its overall message, saying: “I didn’t know what it was about. I don’t know French and nobody, I swear this is God’s truth, nobody at all told me what I’d just sung a song about.”

It was ranked number 479 on Rolling Stone‘s list of “The 500 Greatest Songs of All Time.”