Let's not forget Janis Joplin. She did for rock music and the blues, what Billie Holiday did for jazz and Bessie Smith did for the blues. Some of my favorites: Patricia Barber, Jennifer Warnes, Judy Mowatt (reggae queen), Ella Fitzgerald, Esther Saddisfield (sp) she vocals on Chuck Mangione's Land Of Make Believe, Linda Ronstadt (for her versatility), Diana Krall (for her bedroom voice), Sarah Vaughn, Etta James, and Keith Richards (oops!)