Everything Has Changed is a song by American singer-songwriter Taylor Swift featuring English singer-songwriter Ed Sheeran, taken from Swift's fourth studio album Red (2012). Written by Swift and Sheeran and produced by Butch Walker, the track was released as the sixth single from the album on July 16, 2013. "Everything Has Changed" is a guitar ballad combining folk and pop genres about "wanting to get to know a new lover better".
The single gained mixed reviews from music critics, who were ambivalent towards its composition. "Everything Has Changed" peaked at number 32 on the US Billboard Hot 100 and entered the top ten charts of countries including Belgium, Ireland and the United Kingdom. A music video for "Everything Has Changed" was released of Swift's VEVO channel on June 6, 2013. Swift performed "Everything Has Changed" with Sheeran on Britain's Got Talent on June 8, 2013. Swift also performed the track on her Red Tour (2013).
"Everything Has Changed" received mixed reviews from music critics. A writer from Billboard gave the song a mixed review, criticizing its composition yet complimenting Sheeran's appearance. Robert Cospey of Digital Spy gave the song a three stars out of five rating, praising the song's musical style as "cutesy" but felt that "their exchanges leave us with a warm and fuzzy feeling that is all too rare these days". Sian Rowe, a writer from NME provided "Everything Has Changed" a negative review, writing that the track is "disappointing in every way".
In the United States, "Everything Has Changed" peaked at number 32 on the US Billboard Hot 100 chart; it eventually charted at number eight on the Adult Pop Songs, number 11 on the Adult Contemporary and number 14 on the Mainstream Top 40. On the Canadian Hot 100, the single peaked at number 28. "Everything Has Changed" was more commercially successful in several European territories, peaking at number five in Ireland, number seven in Sheeran's native United Kingdom, and number eight in Belgium (Flanders region). It was certified gold by the Recorded Music NZ, and Recording Industry Association of America, and double platinum by the Australian Recording Industry Association.