As someone who was out dancing at a club a few weeks ago, one mostly frequented by people in their early 20s, the playlist consisted entirely (not mostly), but Lil Jon, Lil Wayne, Missy Elliot, Ludacris, Usher, 50 Cent, etc. I knew all the lyrics and so did my date. Not so for any of the rest of the people. This has been my experience in the past 5 years of going out dancing at different clubs in the US Northeast.