Phoenix, who is well known for his portrayal of country singer Johnny Cash in the film Walk The Line, chose to retire from acting last year to pursue a rap career.

According to The Associated Press, Phoenix’s rap pursuits will be documented by fellow actor Casey Affleck (Good Will Hunting, Oceans Eleven).

Phoenix’s first public performance as a rapper will take place at a Las Vegas club today (January 16) and will also kick off the shooting of the documentary.

Phoenix's other film credits include Gladiator and The Village.