You know what they say about girls with big mouths... And if you dont, you will soon enough. Just listen to lava-lunged Pat Benatar, who looks to cop the Linda Ronstadt Remake Award for, oh, at least this month, anyway. But can she sing? This cat can out-yeowl, out-bellow, out-roar any bull leashed on America by Merrill, Lynch & Co. This mouth that roared is in a class all her own. Why, only recently, she cleared the aisles of a K-Mart during its annual Denture Grip sale just by letting loose with a few bars of "Heartbreaker"... Take her—we suspect she's from Canada anyway.