One of the most popular musicians will close the first official fan convention for Call of Duty XP. Call of Duty XP runs from Sept 2-3 and costs $150 a person. A paid ticket gets you a copy ofModern Warfare 3 (a voucher, most likely, since the game isn't out until November), a world's-first hands-on with MW3's competitive multiplayer, live-action recreations of elements of the series and more. All proceeds go to the CoD veterans' charity.
