Home Jambase Jimmy Fallon & The Roots Team With Sia & Natalie Portman For...National Music NewsJambaseMusicJimmy Fallon & The Roots Team With Sia & Natalie Portman For ‘Iko Iko’ CoverJanuary 30, 2017267FacebookTwitterPinterestWhatsApp Watch Sia, The Roots, Jimmy Fallon and Natalie Portman utilize unconventional instruments for a cover of “Iko Iko.”