Tonight in Brooklyn, New York during Shawn Mendes’ Illuminate World Tour, Ed Sheeran made a surprise visit to take to the stage to sing Mendes’ single “Mercy.” Fans were delighted and screamed loudly as Sheeran stepped onto the stage and those roaring screams did not leave throughout their entire performance together as fans were overjoyed to see two of their favorite singers unite for a stellar performance of “Mercy” together. See video footage of this performance below.