Mariah Carey and Jimmy Fallon surprised a small group of MC fans with live studio performance of Carey singing her new single “The Art of Letting Go“.  The fans thought they where invited by Jimmy Fallon to listen to the single and give their opinions of the song.  But to their suprise, Mariah Carey came throught the stuidiodoors seranading the fans.  It was really funny to see all the facial expressions!!!  Check out the video below.