The last time we heard these two collaborate was on the "Country S**t" remix from Big K.R.I.T.'s critically acclaimed Return Of 4Eva mixtape. Now the duo has gone back to the booth for another track, the smooth Mike Will-produced "On Fire," set to be featured on the upcoming Ludacris mixtape 1.21 Gigawatt: Back To The First Time due out November 15. It can't get any better than this for country rap tunes. Krizzle really killed his verse.