Big K.R.I.T. rattles the speakers with Slim Thug on their bass-heavy banger “Now and Then.” The southern MCs ball in the face of their haters on the K.R.I.T.-produced collaboration, which they recorded for DJ Wally Sparks’ mixtape SPKSMEN: Vol. 1, available December 10.

“Ride out to this one,” said K.R.I.T.