Released the same year as the equally pivotal Stained Class, Killing Machine cemented Judas Priest’s standing and reputation as the world’s foremost metal band of the late 1970s. Further diversifying its music and sporting increased confidence, boldness, and full-bodied songwriting, the album managed a then-unprecedented task of appealing to mainstream tastes via its impeccably solid production, creative prowess, and staggering melodies. Known in the U.S. as Hell Bent for Leather, Killing Machine remains a titanic release no matter the name.