A$AP Rocky Enlists Kendrick Lamar, Joey BadA$$,Yelawolf + More on '1 Train' Track

A$AP Rocky grabs seven of the hottest emcees in the game for the biggest posse track we have ever heard in 2012. The banging '1 Train' features Kendrick Lamar, Joey BadA$$, Yelawolf, Danny Brown, Action Bronson and King B.R.I.T. Whoa!