As Babymetal warm up, the fascinati

As Babymetal warm up, the fascination in the crowd changes to respect for a band who dominate the stage in a unique and unusual way, it's not every day you see heavy metal choreography. Yelling "Louder" at the riled up audience, Babymetal aim to get the crowd chanting a chorus along with them, to no avail - no-one knows what they're saying.