diff --git a/game/Sounds.cpp b/game/Sounds.cpp
new file mode 100755
index 0000000..36dfbca
--- /dev/null
+++ b/game/Sounds.cpp
@@ -0,0 +1,37 @@
+#include "Sounds.h"
+#include <jni.h>
+
+static JNIEnv* env = NULL;
+static jclass jSounds = NULL;
+
+/** BackgroundSound */
+
+void playBackgroundSound() {
+    jmethodID method = env->GetStaticMethodID(jSounds, "JniPlayBackgroundSound", "()V");
+    env->CallStaticVoidMethod(jSounds, method);
+}
+
+void stopBackgroundSound () {
+    jmethodID method = env->GetStaticMethodID(jSounds, "JniStopBackgroundSound", "()V");
+    env->CallStaticVoidMethod(jSounds, method);
+}
+
+/** GameSound - Gunshot */
+
+void playGameSoundGunshot() {
+    jmethodID method = env->GetStaticMethodID(jSounds, "JniPlayGunshotSound", "()V");
+    env->CallStaticVoidMethod(jSounds, method);
+}
+
+void stopGameSoundGunshot() {
+    jmethodID method = env->GetStaticMethodID(jSounds, "JniStopGunshotSound", "()V");
+    env->CallStaticVoidMethod(jSounds, method);
+}
+
+JNIEXPORT void JNICALL Java_fishrungames_doublehitballs_sounds_JniSoundCalls_initJniSounds(JNIEnv *pEnv, jobject pThis) {
+    env = pEnv;
+    jSounds = env->FindClass("fishrungames/doublehitballs/sounds/JniSoundCalls");
+    playBackgroundSound();
+    playGameSoundGunshot();
+    stopBackgroundSound();
+}
\ No newline at end of file
diff --git a/game/Sounds.h b/game/Sounds.h
new file mode 100755
index 0000000..66f7b95
--- /dev/null
+++ b/game/Sounds.h
@@ -0,0 +1,7 @@
+#include <jni.h>
+
+extern "C" {
+
+JNIEXPORT void JNICALL Java_fishrungames_doublehitballs_sounds_JniSoundCalls_initJniSounds(JNIEnv *pEnv, jobject pThis);
+
+}
diff --git a/proj.android-studio/app/CMakeLists.txt b/proj.android-studio/app/CMakeLists.txt
index 13adfe5..f814c6c 100755
--- a/proj.android-studio/app/CMakeLists.txt
+++ b/proj.android-studio/app/CMakeLists.txt
@@ -42,6 +42,7 @@ add_library(DoubleHitBalls SHARED
     ${CMAKE_CURRENT_SOURCE_DIR}/../../game/gamecode.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/../../game/loadingcode.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/../../game/menucode.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../game/Sounds.cpp
 
 )
 
diff --git a/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/GLView.java b/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/GLView.java
index ab012e3..a35a556 100755
--- a/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/GLView.java
+++ b/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/GLView.java
@@ -9,6 +9,7 @@ import android.opengl.GLSurfaceView;
 import javax.microedition.khronos.egl.EGLConfig;
 import javax.microedition.khronos.opengles.GL10;
 
+import fishrungames.doublehitballs.sounds.JniSoundCalls;
 import fishrungames.salmonengineandroid.GLViewAncestor;
 import fishrungames.salmonengineandroid.EngineWrapper;
 
@@ -59,6 +60,7 @@ class GLView extends GLViewAncestor
 		public void onSurfaceChanged(GL10 gl, int width, int height)
 		{
 			JniWrapper.Init(width,height);
+			JniSoundCalls.init();
 		}
 		
 		public void onSurfaceCreated(GL10 gl, EGLConfig config)
diff --git a/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/JniWrapper.java b/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/JniWrapper.java
index 8e73337..d2b6498 100755
--- a/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/JniWrapper.java
+++ b/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/JniWrapper.java
@@ -6,7 +6,6 @@ public class JniWrapper
         System.loadLibrary("DoubleHitBalls");
     }
 
-   
     public static native void Init(int width, int height);
 
 }
\ No newline at end of file
diff --git a/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/sounds/JniSoundCalls.java b/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/sounds/JniSoundCalls.java
index c248e39..ebe046a 100644
--- a/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/sounds/JniSoundCalls.java
+++ b/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/sounds/JniSoundCalls.java
@@ -1,11 +1,49 @@
 package fishrungames.doublehitballs.sounds;
 
-public interface JniSoundCalls {
+import android.media.MediaPlayer;
 
-    void playBackgroundSound();
-    void stopBackgroundSound();
+import fishrungames.doublehitballs.GL2JNIActivity;
+import fishrungames.doublehitballs.R;
 
-    void playGunshotSound();
-    void stopGunshotSound();
+/**
+ * example sounds for JNI calls
+ * @author Artem Budarin
+ * Created by Artem Budarin on 06.08.2018.
+ */
+
+public class JniSoundCalls {
+
+    native public static void initJniSounds();
+
+    private static MediaPlayer backgroundPlayer = null;
+    private static MediaPlayer gunshotPlayer = null;
+
+    public static void init() {
+        initJniSounds();
+    }
+
+    public static void JniPlayBackgroundSound() {
+        backgroundPlayer = MediaPlayer.create(GL2JNIActivity.getInstance(), R.raw.background_sound);
+        backgroundPlayer.setLooping(true);
+        backgroundPlayer.start();
+    }
+
+    public static void JniStopBackgroundSound() {
+        if (backgroundPlayer != null) {
+            backgroundPlayer.stop();
+        }
+    }
+
+    public static void JniPlayGunshotSound() {
+        gunshotPlayer = MediaPlayer.create(GL2JNIActivity.getInstance(), R.raw.gunshot_sound);
+        gunshotPlayer.setLooping(false);
+        gunshotPlayer.start();
+    }
+
+    public static void JniStopGunshotSound() {
+        if (gunshotPlayer != null) {
+            gunshotPlayer.stop();
+        }
+    }
 
 }
diff --git a/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/sounds/JniSoundCallsImpl.java b/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/sounds/JniSoundCallsImpl.java
deleted file mode 100644
index e5a6b39..0000000
--- a/proj.android-studio/app/src/main/java/fishrungames/doublehitballs/sounds/JniSoundCallsImpl.java
+++ /dev/null
@@ -1,47 +0,0 @@
-package fishrungames.doublehitballs.sounds;
-
-import android.media.MediaPlayer;
-
-import fishrungames.doublehitballs.GL2JNIActivity;
-import fishrungames.doublehitballs.R;
-
-/**
- * example sounds for JNI calls
- * @author Artem Budarin
- * Created by Artem Budarin on 06.08.2018.
- */
-
-public class JniSoundCallsImpl implements JniSoundCalls {
-
-    private MediaPlayer backgroundPlayer = null;
-    private MediaPlayer gunshotPlayer = null;
-
-    @Override
-    public void playBackgroundSound() {
-        backgroundPlayer = MediaPlayer.create(GL2JNIActivity.getInstance(), R.raw.background_sound);
-        backgroundPlayer.setLooping(true);
-        backgroundPlayer.start();
-    }
-
-    @Override
-    public void stopBackgroundSound() {
-        if (backgroundPlayer != null) {
-            backgroundPlayer.stop();
-        }
-    }
-
-    @Override
-    public void playGunshotSound() {
-        gunshotPlayer = MediaPlayer.create(GL2JNIActivity.getInstance(), R.raw.gunshot_sound);
-        gunshotPlayer.setLooping(false);
-        gunshotPlayer.start();
-    }
-
-    @Override
-    public void stopGunshotSound() {
-        if (gunshotPlayer != null) {
-            gunshotPlayer.stop();
-        }
-    }
-
-}