Eminem has put together a Detroit rap all-star contingent - including Big Sean, Danny Brown, Royce da 5'9", Trick Trick and Dej Loaf - to record a song called "Detroit Vs. Everybody," which will be released next month.The track appears on "Shady XV," a two-disc set due out Nov. 24 to commemorate the 15th anniversary of Eminem's Shady Records label.