New Music: Eminem Feat. Dr. Dre, Jay-Z & 50 Cent ‘Syllables’

How better to close out 2010—a year defined by anticipated and unexpected posse cut mashups—than with this Em gem also featuring Jay-Z, Dr. Dre, 50 Cent, Stat Quo and Cashis. We couldn’t have scripted it better ourselves. Now sit back and listen. Who killed it?

Update: This record is unreleased from 2007, in case you can’t tell by the song alone…