Titans of the 80's British Heavy-Metal revival and progenitors of contemporary Pop Metal Def Leppard have never let anything stand in their way, even their drummer Rick Allen losing an arm to a car accident. Overcoming this with a custom kit and a new style of drumming, the band surged on to create the album 'Hysteria', which hit 12 times platinum in US sales and sold over 20 million copies worldwide.