Another day means another festival performance for the one and only Kanye West. Except, for this occasion, Kanye West filled in at the last minute for Frank Ocean who canceled a mere two days before he was scheduled to take the stage at the FYF Festival in Los Angeles. Performing a plethora of hits and Kanye classics, Kanye upped the ante and invited Rihanna to join him during his performance of their latest collaboration, ‘FourFiveSeconds’, along with ‘All Of The Lights’. Surprising concertgoers, with a drink in hand, Rihanna and Kanye shook up the place with their live renditions. Check out their performance at the FYF Festival, below.