diff --git a/OpenRA.Game/Game.cs b/OpenRA.Game/Game.cs
index 3f5c8ddfa3..b8d435db96 100644
--- a/OpenRA.Game/Game.cs
+++ b/OpenRA.Game/Game.cs
@@ -223,6 +223,10 @@ namespace OpenRA
 			//   Much better to clean up now then to drop frames during gameplay for GC pauses.
 			GCSettings.LargeObjectHeapCompactionMode = GCLargeObjectHeapCompactionMode.CompactOnce;
 			GC.Collect();
+
+			// PostLoadComplete is designed for anything that should trigger at the very end of loading.
+			// e.g. audio notifications that the game is starting.
+			OrderManager.World.PostLoadComplete(worldRenderer);
 		}
 
 		public static void RestartGame()
diff --git a/OpenRA.Game/Traits/TraitsInterfaces.cs b/OpenRA.Game/Traits/TraitsInterfaces.cs
index 6ce8d3842a..25509261b1 100644
--- a/OpenRA.Game/Traits/TraitsInterfaces.cs
+++ b/OpenRA.Game/Traits/TraitsInterfaces.cs
@@ -366,6 +366,7 @@ namespace OpenRA.Traits
 	public interface INotifySelection { void SelectionChanged(); }
 
 	public interface IWorldLoaded { void WorldLoaded(World w, WorldRenderer wr); }
+	public interface IPostWorldLoaded { void PostWorldLoaded(World w, WorldRenderer wr); }
 	public interface INotifyGameLoading { void GameLoading(World w); }
 	public interface INotifyGameLoaded { void GameLoaded(World w); }
 	public interface INotifyGameSaved { void GameSaved(World w); }
diff --git a/OpenRA.Game/World.cs b/OpenRA.Game/World.cs
index 505fdba1d1..1fda6873e0 100644
--- a/OpenRA.Game/World.cs
+++ b/OpenRA.Game/World.cs
@@ -296,16 +296,29 @@ namespace OpenRA
 					using (new PerfTimer(iwl.GetType().Name + ".WorldLoaded"))
 						iwl.WorldLoaded(this, wr);
 
-			gameInfo.StartTimeUtc = DateTime.UtcNow;
 			foreach (var player in Players)
 				gameInfo.AddPlayer(player, OrderManager.LobbyInfo);
 
 			gameInfo.DisabledSpawnPoints = OrderManager.LobbyInfo.DisabledSpawnPoints;
 
+			gameInfo.StartTimeUtc = DateTime.UtcNow;
+
 			if (OrderManager.Connection is NetworkConnection nc && nc.Recorder != null)
 				nc.Recorder.Metadata = new ReplayMetadata(gameInfo);
 		}
 
+		public void PostLoadComplete(WorldRenderer wr)
+		{
+			foreach (var iwl in WorldActor.TraitsImplementing<IPostWorldLoaded>())
+				using (new PerfTimer(iwl.GetType().Name + ".PostWorldLoaded"))
+					iwl.PostWorldLoaded(this, wr);
+
+			foreach (var p in Players)
+				foreach (var iwl in p.PlayerActor.TraitsImplementing<IPostWorldLoaded>())
+					using (new PerfTimer(iwl.GetType().Name + ".PostWorldLoaded"))
+						iwl.PostWorldLoaded(this, wr);
+		}
+
 		public void SetWorldOwner(Player p)
 		{
 			WorldActor.Owner = p;
diff --git a/OpenRA.Mods.Common/Traits/World/MusicPlaylist.cs b/OpenRA.Mods.Common/Traits/World/MusicPlaylist.cs
index e0d8a1a368..53f8935f46 100644
--- a/OpenRA.Mods.Common/Traits/World/MusicPlaylist.cs
+++ b/OpenRA.Mods.Common/Traits/World/MusicPlaylist.cs
@@ -43,7 +43,7 @@ namespace OpenRA.Mods.Common.Traits
 		public override object Create(ActorInitializer init) { return new MusicPlaylist(init.World, this); }
 	}
 
-	public class MusicPlaylist : INotifyActorDisposing, IGameOver, IWorldLoaded, INotifyGameLoaded
+	public class MusicPlaylist : INotifyActorDisposing, IGameOver, IPostWorldLoaded, INotifyGameLoaded
 	{
 		readonly MusicPlaylistInfo info;
 		readonly World world;
@@ -98,7 +98,7 @@ namespace OpenRA.Mods.Common.Traits
 			}
 		}
 
-		void IWorldLoaded.WorldLoaded(World world, WorldRenderer wr)
+		void IPostWorldLoaded.PostWorldLoaded(World world, WorldRenderer wr)
 		{
 			// Reset any bogus pre-existing state
 			Game.Sound.DisableWorldSounds = info.DisableWorldSounds;
diff --git a/OpenRA.Mods.Common/Traits/World/StartGameNotification.cs b/OpenRA.Mods.Common/Traits/World/StartGameNotification.cs
index 0d77342b35..8437892a53 100644
--- a/OpenRA.Mods.Common/Traits/World/StartGameNotification.cs
+++ b/OpenRA.Mods.Common/Traits/World/StartGameNotification.cs
@@ -38,7 +38,7 @@ namespace OpenRA.Mods.Common.Traits
 		public override object Create(ActorInitializer init) { return new StartGameNotification(this); }
 	}
 
-	sealed class StartGameNotification : IWorldLoaded, INotifyGameLoaded, INotifyGameSaved
+	sealed class StartGameNotification : IPostWorldLoaded, INotifyGameLoaded, INotifyGameSaved
 	{
 		readonly StartGameNotificationInfo info;
 		public StartGameNotification(StartGameNotificationInfo info)
@@ -46,7 +46,7 @@ namespace OpenRA.Mods.Common.Traits
 			this.info = info;
 		}
 
-		void IWorldLoaded.WorldLoaded(World world, WorldRenderer wr)
+		void IPostWorldLoaded.PostWorldLoaded(World world, WorldRenderer wr)
 		{
 			if (!world.IsLoadingGameSave)
 			{