"I'm not willing to contribute my life's work to an experiment that I don't feel fairly compensates the writers, producers, artists and creators of this music," she said at the time.
She announced her return in an Instagram post late Thursday. Her music will also appear on Tidal and Amazon (AMZN, Tech30) Music.
"In celebration of 1989 selling over 10 Million Albums Worldwide and the RIAA's 100 Million Song Certification announcement, Taylor wants to thank her fans by making her entire back catalog available to all streaming services tonight at midnight," the caption to a photo of Swift read.
A post shared by Taylor Nation (@taylornation) on Jun 8, 2017 at 4:22pm PDT
Swift's decision means Apple Music loses its exclusive access to her tunes.
She has taken that service to task, too. In 2015, she criticized Apple Music for not paying artists for songs streamed during a customer's three-month trial. Apple (AAPL, Tech30) reserved the decision, and Swift later appeared in ads for Apple Music.
"There's a situation," Perry told "Late Late Show" host James Corden last month while appearing with him on "Carpool Karaoke." "Honestly, it's really like she started it, and it's time for her to finish it."