Album Gems: T.I. feat. Christina Aguilera - Castle Walls

After Rihanna and Eminem's hit collaboration 'Love the Way You Lie', here is another collaboration that makes a musical impact.

T.I. has collaborated with Christina Aguilera in 'Castle Wall' The track is featured in T.I.'s latest and seventh studio album, No Mercy. This single has been released as the last promotion track for this album. the first promotional single for this album was T.I. featuring Chris Brown in 'Get Back Up'.