the slow American Hustle SOng

whats the name of the song that plays like twice during the movie , one time it is played when they finish the tour and riding back home, it goes something like this.. ITS AMERICAN HUSTLE AND WE DOWN TO RIDE.....( Its a slow beat) THANX
its also p[layed when Kat is Crying after he and Ludacris finish viewing the film?? also if you own the DVD its the song playin during the MENU