R&B legend Mary J. Blige debuted the video Thursday for her latest single, Why?," featuring fellow R&B singer and Maybach Records head Rick Ross.  The single is the third album from Blige's tenth album, "My Life II...The Journey Continues (Act II)", released last November.  The set has moved nearly 600,000 copies in the US since its release, according to Nielsen SoundScan.  Watch the video for "Why?" below.