diff --git a/Learning_is_keyboard/graphics/light_mode/single_keys/key_1_one.png b/Learning_is_keyboard/graphics/light_mode/single_keys/key_1_one.png
index 32e6832..e6d4b19 100644
Binary files a/Learning_is_keyboard/graphics/light_mode/single_keys/key_1_one.png and b/Learning_is_keyboard/graphics/light_mode/single_keys/key_1_one.png differ
diff --git a/Learning_is_keyboard/sound/sound_error.mp3 b/Learning_is_keyboard/sound/sound_error.mp3
new file mode 100644
index 0000000..76883de
Binary files /dev/null and b/Learning_is_keyboard/sound/sound_error.mp3 differ
diff --git a/Learning_is_keyboard/sound/sound_error.wav b/Learning_is_keyboard/sound/sound_error.wav
new file mode 100644
index 0000000..5002e0d
Binary files /dev/null and b/Learning_is_keyboard/sound/sound_error.wav differ
diff --git a/Learning_is_keyboard/src/View/MainFrame/MyImages.java b/Learning_is_keyboard/src/View/MainFrame/MyImages.java
index d819117..83f9abf 100644
--- a/Learning_is_keyboard/src/View/MainFrame/MyImages.java
+++ b/Learning_is_keyboard/src/View/MainFrame/MyImages.java
@@ -40,7 +40,7 @@ public class MyImages {
             e.printStackTrace();
         }
 
-        return oDefaultLightKeyboardBufferedImage.getScaledInstance(69, 62, Image.SCALE_SMOOTH);
+        return oDefaultLightKeyboardBufferedImage.getScaledInstance(68, 61, Image.SCALE_SMOOTH);
     }
 
     public static Image getLight_Key_2_Two_Image() {
diff --git a/Learning_is_keyboard/src/View/MainFrame/MyLayeredKeyboardPanel.java b/Learning_is_keyboard/src/View/MainFrame/MyLayeredKeyboardPanel.java
index a4f4f96..cb052d8 100644
--- a/Learning_is_keyboard/src/View/MainFrame/MyLayeredKeyboardPanel.java
+++ b/Learning_is_keyboard/src/View/MainFrame/MyLayeredKeyboardPanel.java
@@ -49,7 +49,7 @@ public class MyLayeredKeyboardPanel extends JPanel {
         aiiImages[1][2] = 0;
 
         //1 / ! Key
-        aiiImages[2][1] = 142;
+        aiiImages[2][1] = 143;
         aiiImages[2][2] = 0;
 
         //2 / @ Key
diff --git a/Learning_is_keyboard/src/View/MainFrame/MyMainFrame.java b/Learning_is_keyboard/src/View/MainFrame/MyMainFrame.java
index 9cc04bb..872f0eb 100644
--- a/Learning_is_keyboard/src/View/MainFrame/MyMainFrame.java
+++ b/Learning_is_keyboard/src/View/MainFrame/MyMainFrame.java
@@ -1,5 +1,10 @@
 package View.MainFrame;
 
+import javax.sound.sampled.AudioInputStream;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.Clip;
+import javax.sound.sampled.LineUnavailableException;
+import javax.sound.sampled.UnsupportedAudioFileException;
 import javax.swing.JFrame;
 
 import java.awt.GridBagLayout;
@@ -7,6 +12,8 @@ import java.awt.GridBagConstraints;
 import java.awt.Insets;
 import java.awt.event.KeyEvent;
 import java.awt.event.KeyListener;
+import java.io.File;
+import java.io.IOException;
 
 public class MyMainFrame extends JFrame implements KeyListener {
 
@@ -14,8 +21,27 @@ public class MyMainFrame extends JFrame implements KeyListener {
 
     private String sApplicationTitle = "Learning is KEYboard";
 
+    private File oSoundFile = new File("Learning_is_keyboard/sound/sound_error.wav");
+    private AudioInputStream soundErrorAudioStream;
+    private Clip clip;
+
     public MyMainFrame() {
         
+        try {
+            soundErrorAudioStream = AudioSystem.getAudioInputStream(oSoundFile);
+            clip = AudioSystem.getClip();
+            clip.open(soundErrorAudioStream);
+        } catch (UnsupportedAudioFileException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        } catch (IOException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        } catch (LineUnavailableException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+
         this.setTitle(sApplicationTitle);
         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
         this.setResizable(true);
@@ -47,7 +73,6 @@ public class MyMainFrame extends JFrame implements KeyListener {
     public void keyTyped(KeyEvent e) {
         //Invoked when a key is typed. Uses KeyChar, char output
         
-        
     }
 
     @Override
@@ -58,15 +83,19 @@ public class MyMainFrame extends JFrame implements KeyListener {
             //Row 1
             case ('`'): {
                 oKeyboardPanel.setImage(1, 1);
+                clip.start();
             }break;
             case ('~'): {
                 oKeyboardPanel.setImage(1, 1);
+                clip.start();
             }break;
             case ('1'): {
                 oKeyboardPanel.setImage(1, 2);
+                clip.start();
             }break;
             case ('!'): {
                 oKeyboardPanel.setImage(1, 2);
+                clip.start();
             }break;
             case ('2'): {
                 oKeyboardPanel.setImage(1, 3);
@@ -396,22 +425,29 @@ public class MyMainFrame extends JFrame implements KeyListener {
     public void keyReleased(KeyEvent e) {
         //Called whenever a button is released
 
+        
+
         switch (e.getKeyChar()) {
             //Row 1
             case ('`'): {
                 oKeyboardPanel.setImage(0, 1);
+                clip.setMicrosecondPosition(0);
             }break;
             case ('~'): {
                 oKeyboardPanel.setImage(0, 1);
+                clip.setMicrosecondPosition(0);
             }break;
             case ('1'): {
                 oKeyboardPanel.setImage(0, 2);
+                clip.setMicrosecondPosition(0);
             }break;
             case ('!'): {
                 oKeyboardPanel.setImage(0, 2);
+                clip.setMicrosecondPosition(0);
             }break;
             case ('2'): {
                 oKeyboardPanel.setImage(0, 3);
+                clip.setMicrosecondPosition(0);
             }break;
             case ('@'): {
                 oKeyboardPanel.setImage(0, 3);