When I think about rock & roll as a whole, the artists who first come to mind are Robert Plant, Jim Morrison, Jimmy Page, John Lennon, Keith Moon, Jimi Hendrix, Eric Clapton, Iggy Pop, Slash, etc., etc. The list goes on forever. But only after naming all these musical dudes, plus a handful more, does a lady rocker get mentioned. Why is that? Why are Patti Smith, Joan Jett, Janis Joplin, Mama Cass and Grace Slick either afterthoughts or left out completely?