 In July 2013, Jay-Z stated that a joint tour with Beyoncé was "slowly making sense, more sense every day".Throughout 2013 and 2014, during Beyoncé's The Mrs. Carter Show World Tour, Jay-Z made multiple guest appearances, starting in July at The Sound of Change Live charity concert where the couple performed "Crazy in Love" together, shortly followed by another guest appearance at Brooklyn's Barclays Center in August, where Jay-Z performed "Tom Ford" accompanied by Beyoncé's backing vocals as found in the song.During Beyoncé's final leg of the tour in 2014, Jay-Z appeared a total of seven times to perform their most recent collaboration, "Drunk in Love", together.