Watch Sia, Natalie Portman, & Jimmy Fallon Sing “Iko Iko”

Sia was the musical guest on last night’s Jimmy Fallon, and the singer — who will release her new album This Is Acting tomorrow — was joined by Natalie Portman, the Roots, and Fallon to perform traditional New Orleans song “Iko Iko.” She also did “Cheap Thrills” from her upcoming album. Watch both performances below.

This Is Acting is out 1/29 via RCA.