While Big Boi is still planning a big remix for "In The A," his fellow rap buddy and upcoming tour mate Killer Mike decided to tack on a verse. As always, Mike doesn't disappoint. He chooses the right beats to hop on whenever he does a remix or even a guest feature for that matter. DJ Trackstar put together a great tape that showcases Killer and Big's relationship through the music they've created, so listen to that here.