In a recent episode of The Late Late Show with James Corden, he brought out a boy band called TNT Boys who consists of three young Filipino boys who can SING!! Well one of them is a Ariana Grande super-fan! So during the interview James Corden has them wave to the camera to say hi to Ariana who he mentions sometimes watches the show only to reveal to the audience that she's actually backstage! So during their performance, Ariana Grande actually comes out to join them on stage and their reaction is priceless!!