There’s no debate: Bruce Dickinson is one of heavy metal’s greatest voices. Along with Rob Halford of Judas Priest, he popularised the concept of the operatic headbanger. Dickinson’s legacy rests largely on his work with New Wave of British Heavy Metal icons Iron Maiden. After he joined the group in 1981, they unleashed canonical epics like “The Trooper” and “Run to the Hills”. Dickinson’s résumé also includes a pre-Iron Maiden stint with Samson, another band that emerged from the NWOBHM, as well as a clutch of solo albums that reveal the versatile singer’s ability to inject galloping heavy metal with hard rock’s grit and toughness.