Plus, pics from Usher, Beyoncé, Luke James and others.
Celebrating 20 years of Blackstreet with a look at the musical legacy of the King of New Jack Swing.
A track-by-track look at Mimi's latest effort.
The Godfather of Soul has contributed much to hip hop.
Michelle Obama, Dwyane Wade and Pitbull also celebrate this week.
Hip hop and soul meet center stage. (12/1/2013)