On paper, this collaboration between Mac Miller and Waka Flocka Flame is an odd one. Their two styles are vastly different, yet "Dog Pound" comes out nicely, due in part to the DJ Dahi production. Even more surprising is Waka's calm (see: no yelling) verse. This is just a loose record that won't be on Mac's sophomore album. 

Listen: Mac Miller f/ Waka Flocka Flame "Dog Pound"