CLEVELAND (AP) - The Rock and Roll Hall of Fame in Cleveland will spend a week exploring just why the Rolling Stones are who they are. They will be the focus of the Rock Hall's Annual Music Masters series beginning October 21. It will feature interviews, panels, films, educational programs and a conference on the Stones' impact on popular music. A tribute concert will be held October 26. The Rock Hall has been running an exhibit on the Stones to mark the band's 50th anniversary this year.