Here's a new track by Killer Mike called "Didn't I tell Ya." I found this one via XXL, where you can download the song for free.
Download "Didn't I Tell Ya" at XXL
For those who don't remember, or didn't catch Killer Mike in 2009:
And then of course there was Killer Mike and Bone Crusher at the A3C in 2008 (warning, this is not for the faint of heart):
