The cover was recorded at Nashville's Tracking Room Studios, and is part of her newly released "Spotify Singles" series.
"We think about everything they might've heard about us, every reason they wouldn't want us", she told Spotify about the track.
Check out some of the best reactions to Taylor Swift's controversial cover of Earth, Wind & Fire's September.
Kelsie Gibson of Popsugar offered a defense of the tune, however lukewarm, in a piece titled "Taylor Swift Just Made a Classic Earth, Wind & Fire Song Country, and I Don't Hate It".
Other members included Philip Bailey, Verdine White, Fred White, Ralph Johnson, Larry Dunn, Al McKay and Andrew Woolfolk.
Their more popular songs include September, That's the Way of the World, Love Music, Let's Groove and Shining Star. "People who are mad at Taylor Swift for changing the genre of September are the same people who think I Will Always Love You is an original Whitney Houston song", one user tweeted. Swift replaces the big vibrant sound with a slowed down banjo laced country feel that totally disrespect's the songs intention.