Justin Smith, better known as Just Blaze, is an American hip-hop music producer from Paterson, New Jersey. Blaze is also theCEO of Fort Knocks Entertainment. He is most well known for producing Jay-Z songs on the albums The Blueprint, The Blueprint 2, and The Black Album.
He is also known for producing a number of songs on Eminem's 2010 album Recovery. Blaze appears in the video for the third single from Recovery entitled "No Love", which he also produced, and on one of Eminem's Recovery leftover tracks called "Fly Away".