Listen: New T.I. single ‘Castle Walls’ featuring Christina Aguilera

Still from Burlesque

A series of high-profile guest spots on other people’s hits could be just what Christina Aguilera needs right now.
Her appearance on T.I.’s new single ‘Castle Walls‘ follows the sad/epic hip-hop duet formula which has worked so well in recent times for Eminem (‘Stan’ with Dido & ‘Love The Way You Lie’ with Rihanna), Jay Z (‘Empire State Of Mind’ with Alicia Keys) and B.o.B. (‘Airplanes’ with Hayley Williams), so hopefully this song will follow suit.