 Beyoncé first performed " Crazy in Love " with Jay Z on August 28 , 2003 , during the 2003 MTV Video Music Awards . She sang the song in a medley , with the pre @-@ recorded vocals of Sean Paul on " Baby Boy " ( 2003 ) . " Crazy in Love " was included on the set list for most of Beyoncé ’ s concert tours . The song was the closing track of her Dangerously in Love World Tour that began in late 2003 . Beyoncé performed " Crazy in Love " live at the 2004 BRIT Awards February 17 , 2004 . <unk> <unk> And Todd Peterson wrote that she , " ... lit up the stage with her performance of " Crazy in Love " , wearing a white Roberto <unk> dress and nearly half a million dollars worth of <unk> . The pop diva , appearing onstage in a puff of smoke , stopped midway through the song to pull up her top before walking away with the best international female solo artist award . " Beyoncé and Jay Z also performed " Crazy in Love " at The Prince 's Trust Urban Music Festival at Earls Court in London on May 31 , 2004 . 
