Mane Mane 4CGG f/ Chief Keef – Already Know Posted on December 1, 2014 by Andrew Barber Glo Gang rapper Mane Mane 4CGG links with Glo Gang boss, Chief Keef for the new single, “Already Know.” Do you already know this is something you’ll wanna check out? Then hit the jump and get to it. Mane’s project is due out soon.