Various, No Artist, The Firm, No Artist, No Artist, Queensrÿche, Antix, Shire, AC/DC, No Artist, No Artist, Triumph, Whitesnake, Metallica, Metallica, No Artist, No Artist, Autograph, No Artist

Seattle Grunge

Heavy riffs played by people raised on punk, recorded cheap in the Pacific Northwest and then sold worldwide.

Detroit Proto-Punk

Pull this thread and you get Michigan guitar noise from 1969 ballrooms to 1999 basements, unbroken.