Pick of the Week #3

I have barely any time last week to post any pick of the week, at least, so my apologies. This week's pick comes from rapper T.I. featuring Christina Aguilera in the epic collaboration Castle Walls, composed by the same person who gave you "Love The Way You Lie." Unlike Rihanna, Aguilera gets her own verse in this track, but we'll see if this gets to appear as a single per se on Aguilera's next album like Rihanna's Love The Way You Lie Part 2. Enjoy listening!