6 Amazing Sia Performances of 2015▻▻ More Celebrity News ▻▻ Both SIA and Natalie Portman .<br />Jimmy, Sia and Natalie join the Roots for a special performance of the classic song Iko Iko. Instrument list below: Sia - vocals Jimmy - spoons Natalie - blocks .<br />Natalie Portman and Sia sing Iko Iko with Jimmy Fallon and the Roots.<br />Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show .
