diff --git a/code/game/gamemodes/cm_process.dm b/code/game/gamemodes/cm_process.dm
index e4e0e32adff4..82f0902e2f8c 100644
--- a/code/game/gamemodes/cm_process.dm
+++ b/code/game/gamemodes/cm_process.dm
@@ -244,6 +244,34 @@ GLOBAL_VAR_INIT(next_admin_bioscan, 30 MINUTES)
 
 	return num_marines
 
+/datum/game_mode/proc/count_per_faction(list/z_levels = SSmapping.levels_by_any_trait(list(ZTRAIT_GROUND, ZTRAIT_RESERVED, ZTRAIT_MARINE_MAIN_SHIP)))
+	var/num_marines = 0
+	var/num_WY = 0
+	var/num_UPP = 0
+	var/num_CLF = 0
+	var/num_headcount = 0
+
+	for(var/mob/living/carbon/human/current_human as anything in GLOB.alive_human_list)
+		if(!(current_human.z && (current_human.z in z_levels) && !istype(current_human.loc, /turf/open/space)))
+			continue
+		if(current_human.faction in FACTION_LIST_WY || current_human.job == "Corporate Liaison") //The CL is assigned the USCM faction for gameplay purposes
+			num_WY++
+			num_headcount++
+			continue
+		if(current_human.faction == FACTION_UPP)
+			num_UPP++
+			num_headcount++
+			continue
+		if(current_human.faction == FACTION_CLF)
+			num_CLF++
+			num_headcount++
+			continue
+		if(current_human.faction == FACTION_MARINE)
+			num_marines++
+			num_headcount++
+			continue
+		num_headcount++
+	return list("marine_headcount" = num_marines,"WY_headcount" = num_WY,"UPP_headcount" = num_UPP,"CLF_headcount" = num_CLF,"total_headcount" = num_headcount)
 
 /*
 #undef QUEEN_DEATH_COUNTDOWN
diff --git a/code/game/gamemodes/colonialmarines/colonialmarines.dm b/code/game/gamemodes/colonialmarines/colonialmarines.dm
index 65dc2666070d..8935811f55bd 100644
--- a/code/game/gamemodes/colonialmarines/colonialmarines.dm
+++ b/code/game/gamemodes/colonialmarines/colonialmarines.dm
@@ -354,6 +354,8 @@
 //////////////////////////////////////////////////////////////////////
 //Announces the end of the game with all relevant information stated//
 //////////////////////////////////////////////////////////////////////
+#define MAJORITY 0.5 // What percent do we consider a 'majority?'
+
 /datum/game_mode/colonialmarines/declare_completion()
 	announce_ending()
 	var/musical_track
@@ -372,7 +374,20 @@
 				round_statistics.current_map.total_marine_victories++
 				round_statistics.current_map.total_marine_majors++
 		if(MODE_INFESTATION_X_MINOR)
-			musical_track = pick('sound/theme/neutral_melancholy1.ogg','sound/theme/neutral_melancholy2.ogg')
+			var/list/living_player_list = count_humans_and_xenos(EvacuationAuthority.get_affected_zlevels())
+			if(living_player_list[1] && !living_player_list[2]) // If Xeno Minor but Xenos are dead and Humans are alive, see which faction is the last standing
+				var/headcount = count_per_faction()
+				var/living = headcount["total_headcount"]
+				if ((headcount["WY_headcount"] / living) > MAJORITY)
+					musical_track = pick('sound/theme/LastManStanding_WY.ogg')
+				else if ((headcount["UPP_headcount"] / living) > MAJORITY)
+					musical_track = pick('sound/theme/LastManStanding_UPP.ogg')
+				else if ((headcount["CLF_headcount"] / living) > MAJORITY)
+					musical_track = pick('sound/theme/LastManStanding_CLF.ogg')
+				else if ((headcount["marine_headcount"] / living) > MAJORITY)
+					musical_track = pick('sound/theme/neutral_melancholy2.ogg') //This is the theme song for Colonial Marines the game, fitting
+			else
+				musical_track = pick('sound/theme/neutral_melancholy1.ogg')
 			end_icon = "xeno_minor"
 			if(round_statistics && round_statistics.current_map)
 				round_statistics.current_map.total_xeno_victories++
@@ -581,3 +596,4 @@
 
 #undef HIJACK_EXPLOSION_COUNT
 #undef MARINE_MAJOR_ROUND_END_DELAY
+#undef MAJORITY
diff --git a/sound/theme/lastmanstanding_clf.ogg b/sound/theme/lastmanstanding_clf.ogg
new file mode 100644
index 000000000000..365af09116bb
Binary files /dev/null and b/sound/theme/lastmanstanding_clf.ogg differ
diff --git a/sound/theme/lastmanstanding_upp.ogg b/sound/theme/lastmanstanding_upp.ogg
new file mode 100644
index 000000000000..d74812f73df1
Binary files /dev/null and b/sound/theme/lastmanstanding_upp.ogg differ
diff --git a/sound/theme/lastmanstanding_wy.ogg b/sound/theme/lastmanstanding_wy.ogg
new file mode 100644
index 000000000000..225914b416d1
Binary files /dev/null and b/sound/theme/lastmanstanding_wy.ogg differ