Joan Jett flexes her musical muscle

The only thing coy about Joan Jett Saturday night at the Cabaret Metro was the peekaboo lace catsuit she wore. With a guitar slung low on her hips and a sly sneer spread over her lips, Jett out-machoed the male guitarists she grew up emulating and took her fans through a gritty, 85-minute rock ‘n’ roll odyssey, where sweat and vitality were as essential to the show as a solid riff.