Cleveland’s Rock n Roll Hall of Fame is misnamed, writes Ann Powers. “It’s time to shake things up. Today’s most compelling stars — Shakira, Timbaland, the Dixie Chicks, the ever-evolving Kelly Clarkson — are natural cross-pollinators who rock without necessarily being “rock.” The underground is alive with mongrels and mutations, because its denizens grew up with samplers and guitars. ‘Rock ‘n’ roll’ is dead; long live whatever’s next. And let’s hope our Hall of Fame finds a way to name it.”