In September 2011, he announced that he has adopted the name Yasiin Bey and will discontinue using the name Mos Def by the end of the year.
Performed a song with Britsh artists Craig David that was only released on
the radio. It was called 7 Days Later - a remix of Craig David's number 1
hit 7 Days.
In a video, as a protest he attempted to participate in the force feeding that is standard at Guantanamo Bay but stopped abruptly when it proved to be too much for him to handle.
His first music group was Urban Thermo Dynamics, which also included
his younger brother and sister. They recorded an album in 1995 but it
was shelved. It was finally released in 2004.
Name, Mos Def, is a slang term that means "most definitely."