Jennifer Lopez

Wow -- J.Lo has made the leap. While recording Como Ama Una Mujer (her Spanish-language debut), Lopez worked harder than she'd ever worked. She said she sometimes felt like she was soaring as she sang, and it freaked her out. "That's how it's supposed to feel," hubby Marc Anthony would tell her. Well, all the work has paid off. Lopez kicks it hard on this funky, jingling single from Brave, coming off as stronger, sassier and more confident in her voice than she's ever sounded. It doesn't hurt that it's an excellent pop song, either. Bravo, J. to the L.O.!