Some of the best relationships start off rocky and Taylor Swift and Apple are a perfect example of this theory. Shaking hands in a deal that will surely benefit each party, Swift and Apple are teaming up to bring a behind the scenes concert experience to music fans. Swift took to social media Sunday on her birthday to announce that Apple Music will stream her live concert film on Dec. 20. Backed with a 60 second teaser trailer, the "1989 World Tour Concert" film will include an all-access behind the scenes look at the singer's world tour.

Just six months ago, in an open letter to Apple, the "Blank Space" singer slammed Apple for not paying artists for their music during new subscriber 3-month trial periods. I'm sure you are aware that Apple Music will be offering a free 3 month trial to anyone who signs up for the service.

"I'm not sure you know that Apple Music will not be paying writers, producers, or artists for those three months. I find it to be shocking, disappointing, and completely unlike this historically progressive and generous company," Swift said on Tumblr. At that time, if anyone would have told Swift that she would have a full concert movie streaming on Apple Music, she would have looked at them crazy. Since then, Apple changed its policy and Swift is now on board.

Whether you're a diehard Taylor Swift fan, casual listener, or a mere curious observer, expect to see concert footage of Swift's live performances alongside guest appearances by some of music's biggest acts. The film features her entire Sydney show at the ANZ stadium and will only be available to Apple Music subscribers. The tour documentary will also feature rehearsal videos and other exclusives relating to Swift's "1989" tour.

Tags: Taylor Swift 1989 World Tour Music Apple Music