Various, Beggars Opera, Juicy Lucy, Manfred Mann's Earth Band, Jade Warrior, Black Sabbath, Colosseum, Livin' Blues, Cressida, Jethro Tull, Magna Carta

Detroit Proto-Punk

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

San Francisco Psychedelia

Ballroom bands who stretched blues and folk into twenty-minute jams, pressed before anyone edited them down.