Best Hip-Hop/R&B Collaborations of the '90s, Vol. 1

After various tentative steps during the previous decade, it was the '90s that really saw the worlds of hip-hop and R&B collide, as the likes of Puff Daddy, Mariah Carey, Mary J. Blige, and more ushered in a new collaborative era. This collection is a celebration of the greatest moments where sweet soulful voices joined forces with their fiery rap counterparts.