With his teen-hooligan sneer and ear for unshakable hooks, Billy Idol nudged punk rock from the testosterone-fuelled fringe into the mainstream. Even the overdrive of his late-'70s breakout band, Generation X, was tunefully accessible, and his solo career took him deeper into radio-ready pop punk. Idol experimented with industrial beats on 1993's Cyberpunk, and more than two decades later, with Devil’s Playground, he proved he still had arena-rock energy to burn.