During the years between and , entered their mature phase -- which is saying something, since the '80s and '90s mainstream pop that makes up the backbone of their music isn't exactly impetuous-sounding to begin with. But where the sisters made those influences seem not just fresh but inventive on their debut, this time they embrace their straightforwardness. More than ever, calls to mind , and the era's other chart-toppers. They sound uncannily like on "Found It in Silence"'s crisply empowering pop, and could pass for on the throaty confessions of "Nothing's Wrong." 's best songs use this baked-in familiarity in equally reassuring and satisfying ways: As it strikes the perfect balance between heartfelt and glossy, the chorus of "Want You Back" feels like returning to an old flame's arms. "Little of Your Love" and its perfectly timed breakdown are a testament to how well uses pop's most reliable tricks, while the irresistible beats and guitars on "Kept Me Crying" feel like a sadder, wiser callback to "The Wire," proving that while there's nothing as audacious as "My Song 5" here, the band hasn't extinguished its spark entirely. ~ Heather Phares