Sumthing Distribution just posted two free songs on the upcoming Halo Wars soundtrack.  You can get the songs by clicking the Halo Wars banner at http://www.sumthingdigital.com or http://www.sumthing.com.

This is a really great album.  We'll have a review up on Monday, but yeah, pretty different direction from Marty O'Donnell and Michael Salvatori's work on the trilogy.