With just 24 hours to go until Sia‘s anticipated new studio album is set to arrive, Sia’s embarking on a last-minute promotional blitz. Stopping by The Tonight Show last night, Sia linked up with house band The Roots and acclaimed actress Natalie Portman for a special performance. With Jimmy Fallon by their side, the talented group served up a cover fo the New Orleans hit “Iko Iko.” Originally performed by the Dixie Cups, the single became a global success following its release in 1965. You can check out Sia’s version of “Iko Iko” above. Just yesterday, Sia made an appearance on Apple’s Beats 1 to debut a new single on Zane Lowe’s show.