Back to 2013 and here's Ed Sheeran joining Taylor Swift on stage for incredible live performance. This image appears in the gallery:Iconic Summertime Ball Moments Which Trended Worldwide! 14. Back to 2013 and here's Ed Sheeran joining Taylor Swift on stage for incredible live performance. Picture: PA Photos 21 images See the full gallery: Iconic Summertime Ball Moments Which Trended Worldwide!