But the ladies of Babymetal never picked up an instrument (their backup musicians, who got more than one shot at extended unnamed instrumentals, do the heavy lifting). Instead, they emerged from a mid-stage platform as a tight group (over the course of the night the members sang as a trio, a duo and solo) and leapt to the main stage to twirl and shift in enthusiastic, elaborate dance routines while singing almost entirely in Japanese. Yet their fans knew all the words and all the right hand gestures to make — language was no barrier.