This is how it all began. Three sisters playing rock music for their family and friends to see. To make is easier they loaded their videos up on YouTube. The rest is amazing history - as the saying goes.
Seven years later, they had a golden opportunity to record the song again. This time it was with instructions from Metallica to re-interpret the song. Along with Grammy winning pop singer Alessia Cara they totally re-imagined the song. The result is awesomeness like you've never experienced.