Intro to Hard Rock and Heavy Metal | Hard Rock and Heavy Metal
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:max_bytes(150000):strip_icc()/GettyImages-884702686-5c5e28f546e0fb00017dd191.jpg "History, Styles and Subgenres of Heavy Metal")
History, Styles and Subgenres of Heavy Metal
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Why is there heavy rock and hard rock but only heavy metal and not hard metal? - Quora
The 100 Best Heavy Metal Workout Songs of All Time
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What is the difference between metal, heavy metal, speed metal, and black metal? - Quora
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