Ba-de-ya, the 21st of September will always be special to songwriter Allee Willis

"Do you remember… the 21st night of September?"

This September 21st, and every September 21st, will never be forgotten by my dear friend-in-kitsch, Allee Willis.

If you aren't aware, Allee co-wrote the song "September" for Earth, Wind, & Fire. When it quickly climbed to the top of the charts at its release, it forever changed the course of her life for the better.

A few years ago, she shared a funny story about the song's "Ba-de-ya" lyrics with NPR:

The story of the song begins in 1978. Allee Willis was a struggling songwriter in LA — until the night she got a call from Maurice White, the leader of Earth, Wind & Fire. White offered her the chance of a lifetime: to co-write the band's next album. Willis arrived at the studio the next day hoping it wasn't some kind of cosmic joke.

"As I open the door, they had just written the intro to 'September.' And I just thought, 'Dear God, let this be what they want me to write!' Cause it was obviously the happiest-sounding song in the world," Willis says.

Using a progression composed by Earth, Wind & Fire guitarist Al McKay, White and Willis wrote the song over the course of a month, conjuring images of clear skies and dancing under the stars. Willis says she likes songs that tell stories, and that at a certain point, she feared the lyrics to "September" were starting to sound simplistic. One nonsense phrase bugged her in particular.

"The, kind of, go-to phrase that Maurice used in every song he wrote was 'ba-dee-ya,' " she says. "So right from the beginning he was singing, 'Ba-dee-ya, say, do you remember / Ba-dee-ya, dancing in September.' And I said, 'We are going to change 'ba-dee-ya' to real words, right?' "

Wrong. Willis says that at the final vocal session she got desperate and begged White to rewrite the part.

"And finally, when it was so obvious that he was not going to do it, I just said, 'What the f- – – does 'ba-dee-ya' mean?' And he essentially said, 'Who the f- – – cares?'" she says. "I learned my greatest lesson ever in songwriting from him, which was never let the lyric get in the way of the groove."

Allee is easily one of the coolest people on the planet, a true living legend. I urge you to read this 2015 Washington Post feature on her titled, "Allee Willis is the most interesting woman you've never heard of." Trust me, she is!

And, by the way, if you're in the Detroit area next week, Allee's hosting a free party at the Detroit Institute of Arts to celebrate the video release of her new song. It's called "The D" and it's a tribute to her hometown of Detroit. She spent several years and several thousands of dollars rounding up over 5,000 Detroiters — the most people in history on a record — to sing "The D."