In August 2015, Mills released his second mixtape, titled SubTrap. The name stands for Suburban Trap or "Trap music with substance." The album features the singles "The Plug," "God Said Trap (King Trappy III)" and "Cookie Addiction" featuring BJ the Chicago Kid. It features production from Skhye Hutch, was mixed by Lo Mein, Tim Webberson, Matt Weiss, and Delbert Bowers. Project management for Subtrap was overseen by Blade Thornton, David Kuti, Clayton Barmore, Quinelle Holder, and Ryan Booth. Mills' style of rapping has been compared to the early work of Kendrick Lamar, especially Lamar's 2011 album Section.80. -
https://en.wikipedia.org/wiki/IDK_(rapper)