Calvin Harris on Taylor Swift: 'My girl just changed the entire music industry'
The U-turn followed an open letter published by Swift on Tumblr about the value of music.
Harris, who has been dating the US star for a number of weeks, took to Instagram to pay tribute to the '1989' star's determination.
He said after a gig in Las Vegas: "I just played a gig inside a giant owl and my girl just changed the entire music industry what a day."
Apple Music meanwhile is due to launch on June 30.
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