You want untapped, gutsy, street cool? You go to Brooklyn. And if you’re lucky, you just might find an artist half as interesting as Brittany Campbell. The singer-songwriter/producer/guitarist cross-pollinates doo-wop, Motown, new wave and pop rock for a completely fresh and revelatory sound. Like Amy Winehouse, Debbie Harry and Santigold, Campbell’s an original. On “Call Me Baby,” vintage guitars strut against a beat while Campbell summons the soulful angst of a 1950s teen, singing “There’ll be no mercy now / Wherever you are is where I’ll be.” “Nerd,” with its handclaps, 8-bit synths and bouncing beat is instantly infectious even as the singer delivers dubious lines like, “Guess you haven’t heard / God, I’m such a nerd.” As if. “Goody Goody” is the track you’ll want to put on repeat. New wave synths, surf guitars and Campbell’s powerful voice make for a smart and sexy rocker with a vintage edge. Have mercy.