Ok so this album with Kendrick is happening on Friday they both dropped songs where they rapping on instrumentals that are on their solo albums. Nice way to get us talking. The collab album is dropping in February 2016.
Kendrick Lamar dropped this first and I heard it play it twice just to hear it nice:
A TALE OF 2 CITIEZ FREESTYLE
Then J.Cole responded with this:
ALRIGHT FREESTYLE