diff --git a/audio/asteroid-hit-1.flac b/audio/asteroid-hit-1.flac
new file mode 100644
index 0000000..c9925aa
Binary files /dev/null and b/audio/asteroid-hit-1.flac differ
diff --git a/audio/asteroid-hit-2.flac b/audio/asteroid-hit-2.flac
new file mode 100644
index 0000000..ae19a76
Binary files /dev/null and b/audio/asteroid-hit-2.flac differ
diff --git a/audio/asteroid-hit-3.flac b/audio/asteroid-hit-3.flac
new file mode 100644
index 0000000..67dfedf
Binary files /dev/null and b/audio/asteroid-hit-3.flac differ
diff --git a/audio/asteroid-hit-4.flac b/audio/asteroid-hit-4.flac
new file mode 100644
index 0000000..0dcccbd
Binary files /dev/null and b/audio/asteroid-hit-4.flac differ
diff --git a/audio/asteroid-hit-5.flac b/audio/asteroid-hit-5.flac
new file mode 100644
index 0000000..e8ab91e
Binary files /dev/null and b/audio/asteroid-hit-5.flac differ
diff --git a/audio/asteroid-hit-6.flac b/audio/asteroid-hit-6.flac
new file mode 100644
index 0000000..7a8b9b0
Binary files /dev/null and b/audio/asteroid-hit-6.flac differ
diff --git a/audio/asteroid-hit-7.flac b/audio/asteroid-hit-7.flac
new file mode 100644
index 0000000..3391f3b
Binary files /dev/null and b/audio/asteroid-hit-7.flac differ
diff --git a/audio/asteroid-hit-8.flac b/audio/asteroid-hit-8.flac
new file mode 100644
index 0000000..bf1d2eb
Binary files /dev/null and b/audio/asteroid-hit-8.flac differ
diff --git a/audio/crash.flac b/audio/crash.flac
new file mode 100644
index 0000000..89b6e94
Binary files /dev/null and b/audio/crash.flac differ
diff --git a/audio/space.flac b/audio/space.flac
new file mode 100644
index 0000000..461a95d
Binary files /dev/null and b/audio/space.flac differ
diff --git a/script/audioLibrary.js b/script/audioLibrary.js
index bd6eda2..b44e03b 100644
--- a/script/audioLibrary.js
+++ b/script/audioLibrary.js
@@ -83,8 +83,13 @@ var AudioLibrary = {
     REINFORCE_HULL: 'audio/reinforce-hull.flac',
     UPGRADE_ENGINE: 'audio/upgrade-engine.flac',
     LIFT_OFF: 'audio/lift-off.flac',
-    ASTEROID_HIT1: 'audio/asteroid-hit-1.flac',
-    ASTEROID_HIT2: 'audio/asteroid-hit-2.flac',
-    ASTEROID_HIT3: 'audio/asteroid-hit-3.flac',
+    ASTEROID_HIT_1: 'audio/asteroid-hit-1.flac',
+    ASTEROID_HIT_2: 'audio/asteroid-hit-2.flac',
+    ASTEROID_HIT_3: 'audio/asteroid-hit-3.flac',
+    ASTEROID_HIT_4: 'audio/asteroid-hit-4.flac',
+    ASTEROID_HIT_5: 'audio/asteroid-hit-5.flac',
+    ASTEROID_HIT_6: 'audio/asteroid-hit-6.flac',
+    ASTEROID_HIT_7: 'audio/asteroid-hit-7.flac',
+    ASTEROID_HIT_8: 'audio/asteroid-hit-8.flac',
     CRASH: 'audio/crash.flac',
 };
\ No newline at end of file
diff --git a/script/space.js b/script/space.js
index 9740c1d..78b020a 100644
--- a/script/space.js
+++ b/script/space.js
@@ -67,6 +67,7 @@ var Space = {
 		});
 		Space.startAscent();
 		Space._shipTimer = setInterval(Space.moveShip, 33);
+		AudioEngine.changeMusic(AudioLibrary.MUSIC_SPACE);
 	},
 	
 	setTitle: function() {
@@ -74,22 +75,16 @@ var Space = {
 			var t;
 			if(Space.altitude < 10) {
 				t = _("Troposphere");
-				AudioEngine.changeMusic(AudioLibrary.MUSIC_TROPOSPHERE);
 			} else if(Space.altitude < 20) {
 				t = _("Stratosphere");
-				AudioEngine.changeMusic(AudioLibrary.MUSIC_STRATOSPHERE);
 			} else if(Space.altitude < 30) {
 				t = _("Mesosphere");
-				AudioEngine.changeMusic(AudioLibrary.MUSIC_MESOSPHERE);
 			} else if(Space.altitude < 45) {
 				t = _("Thermosphere");
-				AudioEngine.changeMusic(AudioLibrary.MUSIC_THERMOSPHERE);
 			} else if(Space.altitude < 60){
 				t = _("Exosphere");
-				AudioEngine.changeMusic(AudioLibrary.MUSIC_EXOSPHERE);
 			} else {
 				t = _("Space");
-				AudioEngine.changeMusic(AudioLibrary.MUSIC_SPACE);
 			}
 			document.title = t;
 		}
@@ -143,9 +138,20 @@ var Space = {
 						Space.hull--;
 						Space.updateHull();
 
-						// play random asteroid hit
-						var r = Math.floor(Math.random() * 2) + 1;
-						AudioEngine.playSound(AudioLibrary['ASTEROID_HIT' + r]);
+						// play audio on asteroid hit
+						// higher altitudes play higher frequency hits
+						var r = Math.floor(Math.random() * 2);
+						if(Space.altitude > 40) {
+							r += 6;
+							AudioEngine.playSound(AudioLibrary['ASTEROID_HIT_' + r]);
+						} else if(Space.altitude > 20) {
+							r += 4;
+							AudioEngine.playSound(AudioLibrary['ASTEROID_HIT_' + r]);
+						} else  {
+							r += 1;
+							AudioEngine.playSound(AudioLibrary['ASTEROID_HIT_' + r]);
+						}
+						console.log(r);
 
 						if(Space.hull === 0) {
 							Space.crash();