John Mayall & The Bluesbreakers, Eric Clapton, Eric Clapton, Jimmy Page, John Mayall & The Bluesbreakers, Eric Clapton, Eric Clapton, Jimmy Page

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.