July 4 is, as most people know, the day when all the good people in the US celebrate their independance day and give thanks to Roland Emmerich and Will Smith. It's also the date when Activision will release a new song pack for DJ Hero, which maybe isn't as much cause for celebration but still fun for fans of the game.
For 640 Microsoft points, or $8, you'll get:
* Lady Gaga's "Poker Face" mixed with "Girls On Film" by Duran Duran
* Pussycat Dolls' "Buttons" Beat Juggle
* Rihanna's "S.O.S." Beat Juggle