A Timeline of Taylor Swift and Katy Perry's Feud, From Beginning to End

Swift's team announced that she would be returning her extensive music back catalog to streaming services, including Spotify, at midnight on June 9, 2017, the same time as Perry's "Witness" was set to drop. She had previously kept her discography off of most streaming services to protest the business model. Swift didn't mention Perry in her decision, but the timing was interesting.