 On March 10, 2015, Lamar unexpectedly released the song "County Building Blues" to iTunes as a promotional single.Before and after the album's October 2012 release, Lamar toured as a supporting act alongside Drake and Steve Aoki.On May 5, 2013, he begun his first headlining tour with the "Good Kid, M.A.A.D City" World Tour, in West Palm Beach, Florida.