has anyone else heard it? man, this song is pretty good. it's basically Eminem, & Dr. Dre rapping overtop of Numb/Encore's beats. i guess it's nothing official as far as LP, but it's "official" for Dre's mixtape, but you should check it out. Edit: it also says 50 Cent, but I can't hear him through the song unless I overheard something and sorry if this post shouldn't be here, just move/delete thanks
It's actually not official by Dre either. DJ Exclusive put together the Dretox mixtape, it's a bunch of mashups he made with Dre's songs. And this has been posted already, so I'm gonna take a guess that this thread will be locked soon.
I've heard the track and I don't really like it. The one on the Miami Vice trailer is sweet though. 50 Cent is on the song, after Chester sings Numb.