E1m1 Theme audio - Knee Deep in the Dead mod for Half-Life

This is a re-creation of Doom 1's first episode: Knee Deep in the Dead. You are a space marine, and of the bravest, one of the strongest, and one of the most brave in the universe. About an hour ago, you base got a message from the base on Phobos, one of the moons off mars. "We require immediate military support. Something fragin' evil is coming out of the gateways! Computer systems have gone beserk!" Since then, all attempts to establish a connection to either moon base have failed. Since your group is the only military group for 50,000,000 miles, your sent to investigate. Your buddies arm up, you grab your .9 mm, and they go into the base. You stay behind to guard the perimeter and secure the ship. Hours go by.... You start thinking to yourself "What the F*** happened to them?". You decide to go into the base with only your sidearm. As you walk into the doors, you hear a voice over the radio saying "If there's anybody left, if you can hear me, get the hell out of.."