Led Zeppelin performs “Black Dog” during their Celebration Day reunion show at the O2 Arena in London on December 10, 2007, where Robert Plant, at 59 years old, unleashed a scream that hit harder than a wrecking ball, shaking the entire arena with pure rock fury. Trivia: Britannica describes Plant’s vocal identity as “raw vocal power” with a “wide range,” punctuated by “growls, shrieks, and unearthly wails,” which became a defining part of Led Zeppelin’s sound. Music scholarship cited by Britann