On their first studio album in seven years, Def Leppard exuberantly tap every era of their career—and then some. “Battle of My Own” and “Blind Faith” echo the compacted Led Zeppelin metal they started out with; “Let’s Go” and “Dangerous” flirt with Hysteria’s glam riffs and wide-open harmonies; “Man Enough” and “Energized” absorb sleek modern funk and dance-pop like their ’90s albums did. To top it off, the blues rock of “Sea of Love” and ringing New Wave of “Invincible” show they’ve still got fresh tricks up their sleeve.