diff --git a/Assets/Cryville/Crtr/Event/EventBatcher.cs b/Assets/Cryville/Crtr/Event/EventBatcher.cs
index 4392e9d..256c628 100644
--- a/Assets/Cryville/Crtr/Event/EventBatcher.cs
+++ b/Assets/Cryville/Crtr/Event/EventBatcher.cs
@@ -9,7 +9,7 @@ namespace Cryville.Crtr.Event {
 			get;
 			private set;
 		}
-		ContainerState RootState;
+		readonly Chart chart;
 		readonly Dictionary<ChartEvent, ContainerState> containerMap
 			= new Dictionary<ChartEvent, ContainerState>();
 		readonly Dictionary<EventContainer, ContainerState> stateMap
@@ -25,7 +25,8 @@ namespace Cryville.Crtr.Event {
 		double beat;
 		float tempo;
 		
-		public EventBatcher(Chart c) : base(c, new List<ChartEvent>()) {
+		public EventBatcher(Chart c) : base(new List<ChartEvent>()) {
+			chart = c;
 			beat = chart.BeatPosition;
 			tempo = (float)c.sigs[0].tempo;
 			events.Add(c);
diff --git a/Assets/Cryville/Crtr/Event/EventBus.cs b/Assets/Cryville/Crtr/Event/EventBus.cs
index b18d771..438f773 100644
--- a/Assets/Cryville/Crtr/Event/EventBus.cs
+++ b/Assets/Cryville/Crtr/Event/EventBus.cs
@@ -18,8 +18,7 @@ namespace Cryville.Crtr.Event {
 		HashSet<ContainerState> invalidatedStates
 			= new HashSet<ContainerState>();
 
-		public EventBus(Chart c, ContainerState root, List<EventBatch> b)
-			: base(c, b) {
+		public EventBus(ContainerState root, List<EventBatch> b) : base(b) {
 			RootState = root;
 			Expand();
 			AttachBus();
diff --git a/Assets/Cryville/Crtr/StateBase.cs b/Assets/Cryville/Crtr/StateBase.cs
index 286f20f..b9f2f41 100644
--- a/Assets/Cryville/Crtr/StateBase.cs
+++ b/Assets/Cryville/Crtr/StateBase.cs
@@ -5,13 +5,11 @@ namespace Cryville.Crtr {
 	public abstract class StateBase<T> {
 		public int EventId;
 		public double Time;
-		public Chart chart;
 		public List<T> events;
 
 		bool breakflag = false;
 		
-		public StateBase(Chart c, List<T> evs) {
-			chart = c;
+		public StateBase(List<T> evs) {
 			events = evs;
 			EventId = 0;
 			Time = 0;