...worst soundtrack I've ever heard. When I downloading these tunes, I was hoping for more great HALF-LIFE music. But, music for addon wasn't composed by Doug Laurent. The differences between HALF-LIFE and OPPOSING FORCE music are huge. In HALF-LIFE you can hear great battle tunes and little scary ambient pieces. The music of OPPOSING FORCE is techno. Weak techno. The tunes are very similiar and boooooooring. So, if you loved HALF-LIFE music, don't download tunes from OPPOSING FORCE. You will be disappointed.