Kelly Clarkson is furious. She’s been pulverized by heartache, barely able to stand on her own two feet. Yet she perseveres. With “mine,” one-half of a double single that also includes “me,” Clarkson heaves everything from her chest. All the pain, sorrow, and anger oozes from her veins. With little fussiness in the production, her vocals cut deep to the bone. The way she sculpts and synthesizes her misery into a masterful performance is impressive. But that’s what she’s always done, as one of today’s most expressive performers. “mine” isn’t any different. In fact, it’s one of her finest recordings to date.