This is a duet with American singer-songwriter John Mayer. Alicia Keys told the Canadian Sun Media newspapers about how she got together with Mayer. "It really kind of started because we had seen each other at different events and had a chance to talk and kind of get to know each other. He's a really great guy, really funny, really intellectual, smart, and so we had a lot to talk about musically. And then one day he just called me and he was like, 'I've got this song and it's just screaming for your voice on it and what if we just did something really cool, and we didn't make it all about labels and managers and lawyers, we just kind of came in and did music?' And if he only knew how much I needed that song at that moment. To sing at the end of that song was a relief for me in so many ways. And he was like, 'Anytime, anywhere, anything, I'm there.'"