In the mid-seventies, many people felt excluded from and disdained by the mainstream of rock and roll, which had largely come to represent itself as a straight white boys and girls club full of superrich rock stars. The narrow image fostered attitudes of implicit racism and homophobia that exploded in the 1979 “Disco Sucks” backlash . This despite the fact that rock and roll began as interracial music built on the flamboyantly ambiguous sexuality of Little Richard, the racy short stories of Chuck Berry, the grooves of Chubby Checker, the edgy beats of Bo Diddley, and a great many unsung black female performers . Now we tend to remember 70s rock differently, not so much as the era of KISS or the Eagles, but as the transgressive time of David Bowie, Iggy Pop, Lou Reed, and Freddie Mercury, of the huge commercial and creative triumphs of women-led bands like Fleetwood Mac and Heart, of punk and new wave outsiders setting the template for four decades of alternative rock: The ...