diff --git a/UnityProject/.idea/.idea.UnityProject/.idea/indexLayout.xml b/UnityProject/.idea/.idea.UnityProject/.idea/indexLayout.xml
index f04c30d..02eb9d0 100644
--- a/UnityProject/.idea/.idea.UnityProject/.idea/indexLayout.xml
+++ b/UnityProject/.idea/.idea.UnityProject/.idea/indexLayout.xml
@@ -15,6 +15,7 @@
     <explicitExcludes>
       <Path>.idea</Path>
       <Path>.vs</Path>
+      <Path>AudioSamples</Path>
       <Path>Library</Path>
       <Path>Temp</Path>
       <Path>obj</Path>
diff --git a/UnityProject/Assets/Editor/PdSpectrumBindEditor.cs b/UnityProject/Assets/Editor/PdSpectrumBindEditor.cs
index fae4ccd..d00f96e 100644
--- a/UnityProject/Assets/Editor/PdSpectrumBindEditor.cs
+++ b/UnityProject/Assets/Editor/PdSpectrumBindEditor.cs
@@ -15,9 +15,10 @@ namespace cylvester
         private ISpectrumGenerator spectrumGenerator_;
         private IRectangularSelection rectangularSelection_;
         private Rect paintSpace_;
-        
-        private SerializedProperty pdBackendProperty_;
 
+        private SerializedProperty selectionProperty_;
+        private SerializedProperty pdBackendProperty_;
+        
         
         public void OnEnable()
         {
@@ -25,21 +26,21 @@ namespace cylvester
             rectangularSelection_ = new RectangularSelection(TextureWidth, TextureHeight);
 
             pdBackendProperty_ = serializedObject.FindProperty("pdBackend");
-            
+            selectionProperty_ = serializedObject.FindProperty("selection");
+
         }
 
         public override void OnInspectorGUI()
         {
-
             var behaviour = (IPdSpectrumBind)target;
             EditorGUILayout.PropertyField(pdBackendProperty_);
-            serializedObject.ApplyModifiedProperties();
 
             GUILayout.Label("PureData Inputs", EditorStyles.boldLabel);
             behaviour.Channel = EditorGUILayout.Popup("Input Channel", behaviour.Channel, channels);
 
-            if (Application.isPlaying && pdBackendProperty_ != null)
-                RenderSpectrumExtractor(behaviour);
+            RenderSpectrumExtractor(behaviour);
+            serializedObject.ApplyModifiedProperties();
+
         }
 
         private void RenderSpectrumExtractor(IPdSpectrumBind behaviour)
@@ -53,9 +54,12 @@ namespace cylvester
             if (Event.current.type == EventType.Repaint)
             {
                 paintSpace_ = paintSpace;
-                var spectrumArray = behaviour.GetPdArray(behaviour.Channel);
-                
-                behaviour.Energy = spectrumGenerator_.Update(spectrumArray.Data, ref behaviour.Selection);
+
+                IPdArray spectrumArray = null;
+                if(Application.isPlaying)    
+                    spectrumArray = behaviour.GetPdArray(behaviour.Channel);
+
+                behaviour.Energy = spectrumGenerator_.Update(spectrumArray, selectionProperty_.rectValue);
                 GUI.DrawTexture(paintSpace_, spectrumGenerator_.Spectrum);
             }
             
@@ -80,8 +84,7 @@ namespace cylvester
                     }
                     case EventType.MouseDrag:
                     {
-                        rectangularSelection_.Update(Event.current.mousePosition, 
-                            ref paintSpace_, ref behaviour.Selection);
+                        selectionProperty_.rectValue = rectangularSelection_.Update(Event.current.mousePosition, ref paintSpace_);
                         break;
                     }
                 }
diff --git a/UnityProject/Assets/Editor/RectangularSelection.cs b/UnityProject/Assets/Editor/RectangularSelection.cs
index 35b0bd4..4eb76be 100644
--- a/UnityProject/Assets/Editor/RectangularSelection.cs
+++ b/UnityProject/Assets/Editor/RectangularSelection.cs
@@ -5,7 +5,7 @@ namespace cylvester
     interface IRectangularSelection
     {
         void Start(Vector2 mousePosition);
-        void Update(Vector2 mousePosition, ref Rect paintSpace, ref Rect selectionRect);
+        Rect Update(Vector2 mousePosition, ref Rect paintSpace);
     }
     
     public class RectangularSelection : IRectangularSelection
@@ -28,7 +28,7 @@ namespace cylvester
             selectedArea_.y = mousePosition.y;
         }
 
-        public void Update(Vector2 mousePosition, ref Rect paintSpace, ref Rect selectionRect)
+        public Rect Update(Vector2 mousePosition, ref Rect paintSpace)
         {
             selectedArea_.width = mousePosition.x - selectedArea_.x;
             selectedArea_.height = mousePosition.y - selectedArea_.y;
@@ -37,10 +37,13 @@ namespace cylvester
             var width = selectedArea_.width / paintSpace.width;
             var height = selectedArea_.height / paintSpace.height;
 
+            var selectionRect = new Rect();
             selectionRect.x = xPos * textureWidth_;
             selectionRect.y = yPos * textureHeight_;
             selectionRect.width = width * textureWidth_;
             selectionRect.height = height * textureHeight_;
+
+            return selectionRect;
         }
     }
 }
\ No newline at end of file
diff --git a/UnityProject/Assets/Editor/SpectrumGenerator.cs b/UnityProject/Assets/Editor/SpectrumGenerator.cs
index ca57c25..0478b2d 100644
--- a/UnityProject/Assets/Editor/SpectrumGenerator.cs
+++ b/UnityProject/Assets/Editor/SpectrumGenerator.cs
@@ -5,7 +5,7 @@ namespace cylvester
     interface ISpectrumGenerator
     {
         Texture2D Spectrum { get; }
-        int Update(float[] fftData, ref Rect selectionRect);
+        int Update(IPdArray pdArray, Rect selectionRect);
     }
     
     public class SpectrumGenerator : ISpectrumGenerator
@@ -18,23 +18,29 @@ namespace cylvester
             texture_ = new Texture2D(width, height);
         }
         
-        public int Update(float[] fftData, ref Rect selectionRect)
+        public int Update(IPdArray pdArray, Rect selectionRect)
         {
             var numPixels = 0;
             for (var x = 0; x < texture_.width; x++)
             {
-                var magnitude = fftData[x] * 20f;
                 for (var y = 0; y < texture_.height; y++)
                 {
-                    var mY = texture_.height - selectionRect.y;
+                    var color = Color.black;
+                    var validPixel = false;
+                    
+                    if (pdArray != null)
+                    {
+                        var magnitude = pdArray.Data[x] * 20f;
+                        validPixel = magnitude > y;
+                        color = validPixel ? Color.green : Color.black;
+                    }
 
-                    var fillPixel = magnitude > y;
-                    var color =  fillPixel ? Color.green : Color.black;
+                    var mY = texture_.height - selectionRect.y;
                     if ((selectionRect.x < x && x < (selectionRect.x + selectionRect.width)) &&
                         (mY - selectionRect.height < y && y < mY))
                     {
                         color.a = 1f;
-                        if (fillPixel)
+                        if (validPixel)
                             numPixels++;
                     }
                     else
diff --git a/UnityProject/Assets/Scripts/PdConnection/PdSpectrumBind.cs b/UnityProject/Assets/Scripts/PdConnection/PdSpectrumBind.cs
index 1175e60..7f3aa03 100644
--- a/UnityProject/Assets/Scripts/PdConnection/PdSpectrumBind.cs
+++ b/UnityProject/Assets/Scripts/PdConnection/PdSpectrumBind.cs
@@ -6,14 +6,13 @@ namespace cylvester
     {
         IPdArray GetPdArray(int index);
         int Channel { get; set; }
-        ref Rect Selection { get; }
         int Energy { get; set; }
     }
     
     public class PdSpectrumBind : MonoBehaviour, IPdSpectrumBind
     {
         [SerializeField] private PdBackend pdBackend;
-        private Rect selection_;
+        [SerializeField] private Rect selection;
         
         public IPdArray GetPdArray(int index)
         {
@@ -21,7 +20,6 @@ namespace cylvester
         }
 
         public int Channel { get; set; }
-        public ref Rect Selection => ref selection_;
         public int Energy { get; set; }
     }
 }
\ No newline at end of file