Heavy Metal

Downtuned riffs, distortion, and volume forged in industrial Birmingham into a global family of scenes.

Core Principles & Analysis

• Black Sabbath’s 1970 debut, forged in industrial Birmingham, is metal’s founding document.
• The tritone-heavy riff language leaned into intervals classical theory once shunned.
• It radiated into thrash, doom, death, and black metal — each with its own global scene.

Specifications & Metrics

• ERA: 1970 – present