This formula of rapper + female vocalist = hip-hop ballad has seen it’s share of popularity grow in 2010. Now, rapper T.I. and POP star Christina Aguilera have teamed up to deliver a collaboration destined to top the music charts. “Castle Walls” should have no problem finding a place on current mainstream airwaves. The track can be found on the upcoming T.I. release No Mercy which drops on December 7th. Enjoy!

Note: The song was produced by Alex The Kid who also did “Love The Way You Lie”. Surprised? I think not!

T.I. Feat. Christina Aguilera – Castle Walls

[audio:/wp-content/uploads/2010/11/Castle-Walls.mp3|titles=T.I. Featuring Christina Aguilera – Castle Walls]