Christina Aguilera & T.I.: 'Castle Walls' First Listen!

Check out Christina Aguilera singing with T.I. on his track “Castle Walls.”

The song, off of the rapper’s upcoming album No Mercy, was produced by Alex Da Kid, who did Rihanna and Eminem‘s hits “Love the Way You Lie” and its sequel “Love the Way You Lie (Part 2).”

“Everyone thinks that I have it all. It’s so empty living behind these castle walls, these castle walls,” Christina sings. “If I should stumble, if I should fall, would anyone hear me screaming behind these castle walls? There’s no one here at all behind these castle walls.”

WHAT DO YOU THINK of Christina and T.I.’s “Castle Walls” duet?