Move over rock. Hip-hop/R&B is the #1 genre by the numbers. For a genre that's often treated like the red-headed stepchild of the music biz, this is kinda a big deal. I spoke to Lisa Evers over at Fox 5 about the milestone. Check out a clip:
P.S. Streaming is a HUGE part of hip-hop's success. Read up on everything you ever wanted to know about streaming in my feature for XXL.