Cantus - "Northern Lights" Known for "Vuelie," the opening musical number of Disney's Frozen, the all-female Norwegian choir Cantus releases it's Decca debut, Northern Lights, featuring "Vuelie" and other pieces of captivating Norwegian choral music. Cantus is made up of 30 Norwegian women, ranging in age from 20 to 40, who all perform in bunads, the traditional Norwegian style.