Our list collects 20 legendary Metallica riffs, which weren't actually ... in a 2017 interview with Ultimate Guitar, asserting, "'Call' was completely, 100% my song. I wrote every f***** note ...

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They all have one thing in common: riffs. A guitar riff is the hook of a song. It’s a sequence of notes and chords that gives a track an identity. It can open a song, and be repeated throughout ...