James Corden takes full advantage of Christina Aguilera helping him get to work by asking for a little vocal and diva coaching from Christina, and Melissa McCarthy hops in to absolutely crush Redman's verse in "Dirrty."
Carpool Karaoke BONUS: Christina Aguilera's 'Fall In Line'
https://www.youtube.com/watch?v=enq2P7ltPBk
