The Halo 3 Original Soundtrack that was announced last month now has a firm release date - November 20th.

The soundtrack comes in a 2-CD set featuring the game’s original music score and will be released to US retail outlets through Nile Rodgers’ Sumthing Else Music Works label. The soundtrack will also be availableas a digital download at SumthingDigital.com.

The official Halo 3 Original Soundtrack features the new symphonic compositions by Martin O’Donnell and Michael Salvatori, the award-winning composers behind the best-selling Halo: Combat Evolved, Halo 2 Volume One and Halo 2 Volume Two soundtracks. In addition to new original tracks written for the Halo 3 video game, the Halo 3 Original Soundtrack also includes new arrangements of the game’s musical themes that Bungie’s audio director and composer Martin O’Donnell recorded with a full live orchestra and chorus. The 2-CD set amounts to two hours of original music from the game Halo 3.