Ann and Nancy Wilson, widely considered classic rock’s leading sister duo, often entertain girly urges that lead to songs about lovers and, well, hearts. But if you pretend the poppiest ’80s synth bits never happened, you’re left with something more akin to a beefy Fleetwood Mac with pointier guitars. That intro from “Crazy On You” is no joke; add in a monstrous riff or two on the order of “Barracuda,” and maybe it’s time to reconsider where we file them. Perhaps . . . cock rock?

Tue., Aug. 3, 8 p.m., 2010

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