It's been six years since Taylor Swift released her Red album, and so we are going back and revisiting our conversation with Taylor when she first released the album. And the next song that we're going to play and that I had a chance to talk to Taylor about was a duet that was on Red that everybody was excited about. It's Everything Has Changed. Everything Has Changed is a song that I wrote with Ed Sheeran, and he is such a talented person in so many ways. He's such an incredibly talented guitar player and singer and songwriter and performer, and writing this song with him was so much fun because we were sitting in my backyard writing this song and he started singing harmony on it and I asked him if he would record it with me as a duet because it's about this moment that both people are having where they see each other and all of a sudden the world looks different because everything changed. I love this song and I loved the video. Here's Everything Has Changed on Big Machine Radio.