A rapper who went from obscurity to hanging with Yeezy in no time, Chicago emcee Montana of 300 spent 2015 adding his vocals to some bootleg remixes and ended the year working with Kanye West. Montana kicked his career off in 2008 with the group 300, who were named after the gladiator-themed movie. The crew were influenced by the South Chicago style of drill music and added themselves to a remix of Chief Keef's "Don't Like," but by 2014 they were broken up and off to solo careers. Montana's kicked into high gear in 2015 with the track "Air Jordan" and bootleg remixes of tracks...