Sia, Jimmy Fallon, Natalie Portman, and The Roots sing 'Iko Iko' in Sia costumes

Jimmy Fallon, Natalie Portman, and SIa sing &quot;Iko Iko&quot; — (Image credit: The Tonight Show)

Jimmy Fallon dipped into the avant garde on Wednesday's Tonight Show, eschewing the normal setup of school instruments for a white soundstage, black or white turtleneck/pants outfits, and black and blond wigs. The center of this set piece was Sia, face carefully hidden by her black/blonde wig and a giant bow but her voice clear as she belted out the old Dixie Cups hit "Iko Iko," with percussion and vocal backing from Fallon, Natalie Portman, and The Roots. If you close your eyes, it's a good cover of an old New Orleans standard, but it's worth watching just for the percussive cup game one of The Roots is playing just to Sia's left. Peter Weber

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Peter has worked as a news and culture writer and editor at The Week since the site's launch in 2008. He covers politics, world affairs, religion and cultural currents. His journalism career began as a copy editor at a financial newswire and has included editorial positions at The New York Times Magazine, Facts on File, and Oregon State University.