And that's like a**holes and opinions... everyone's is different. If you're looking at the term RnR "holistically"... ie the popular music that displaced swing and Jazz in the 1950's (my working definition please do not shoot at me) then this list makes sense... If you want to restrict your defininition to exclude other sub-genres, soul, RnB, Reggae and country, then this list is flawed and should be revised. It all depends upon your definition.

Da Worfster