Delightfully percussive and performed with the whole troupe wearing the signature Sia wig, the rendition included instrumentation from spoons, cups, a deck of cards and a cue ball.
Fallon sang a surprisingly strong backing vocal while Portman and The Roots brought a rousing life to the call-and-response chorus.
Iko Iko, a New Orleans song, was originally titled Jock-A-Mo and released as a single in 1953 by Sugar Boy and his Cane Cutters. Failing to make the charts then, it became popular in 1965 when pop group The Dixie Cups covered it. It has also been covered by Dr. John, Cyndi Lauper, and the Grateful Dead.
Watch: Jimmy Fallon, Sia, Natalie Portman & The Roots Sing “Iko Iko”: