Amazon.com has a page up for the two-disc Halo 3 Original Soundtrack, due out on November 20, 2007. It will include the music created by Marty O'Donnell and Michael Salvatori for Halo 3 and be published by Sumthing Else Records. However, it will also include a track by the lucky winners of a contest being run at Halo 3's Myspace page. Submissions will be accepted until midnight on October 22. For contest details see the myspace page.