Question: who did taylor swift wrote everything has changed about

title: Everything Has Changed
text: It was reported that English singer - songwriter Ed Sheeran would appear as a guest artist on American recording artist Taylor Swift 's then - upcoming album Red . On October 18 , 2012 , `` Everything Has Changed '' by Swift featuring Sheeran was leaked online . The song was written by Swift and Sheeran in Swift 's backyard . `` Everything Has Changed '' is a guitar ballad , blending folk - pop genres . Written in the key of G - flat major , it has a moderate tempo of 84 beats per minute . The duo 's vocal range spans from G ♭ to D ♭ . Lyrically , the track talks about `` wanting to get to know a new lover better '' . Swift further explained the song 's theme , `` Everything looks different to you because of this one person , because one new person came into your life . It 's really cool '' . 

Answer: answer: The song was written by Swift and Sheeran in Swift's backyard. Swift further explained the song's theme , ``Everything looks different to you because of this one person, because one new person came into your life".
answer: Swift explained that the song is about this one person, the one new person who comes into your life.