Various, Santana, It's A Beautiful Day, Al Kooper, Blood, Sweat And Tears, Mountain, Chicago, Beck, Bogert & Appice, Johnny Winter, Loggins And Messina, John McLaughlin, Chase, Santana

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.