diff --git a/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/GameManager.cs b/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/GameManager.cs
index d2c0ea82..4473bf86 100644
--- a/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/GameManager.cs
+++ b/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/GameManager.cs
@@ -33,6 +33,9 @@ namespace MyGame.Scenes.MiniGame.Scripts
         [SerializeField] private GameObject readyObject;
         [SerializeField] private GameObject tutorialPopupObject;
         [SerializeField] private float resultWaitTime = 1f;
+        [SerializeField] private float normalPitch = 1.1f;
+        [SerializeField] private float hardPitch = 1.2f;
+        [SerializeField] private float extraPitch = 1.4f;
 #if UNITY_EDITOR
         [SerializeField] private bool isDebug;
 #endif
@@ -159,8 +162,11 @@ namespace MyGame.Scenes.MiniGame.Scripts
                         SoundManager.Instance.PlaySE("se_minigame_Start");
                         break;
                     case GameState.Success:
-                        SoundManager.Instance.PlaySE("se_minigame_End");
-                        player.Result();
+                        SoundManager.Instance.PlaySE("se_minigame_End", () =>
+                        {
+                            SoundManager.Instance.ChangePitchBGM(1f);
+                            player.Result();
+                        });
                         break;
                     case GameState.Failure:
                         break;
@@ -210,6 +216,15 @@ namespace MyGame.Scenes.MiniGame.Scripts
             {
                 bgManager.SetSky(x);
                 player.SetSpeed(x);
+                var pitch = x switch
+                {
+                    ScrollGameDifficulty.Easy => 1f,
+                    ScrollGameDifficulty.Normal => normalPitch,
+                    ScrollGameDifficulty.Hard => hardPitch,
+                    ScrollGameDifficulty.Extra => extraPitch, 
+                    _ => throw new ArgumentOutOfRangeException(nameof(x), x, null)
+                };
+                SoundManager.Instance.ChangePitchBGM(pitch);
             }).AddTo(this);
 
             player.OnEndHit.Subscribe(_ =>
@@ -217,13 +232,6 @@ namespace MyGame.Scenes.MiniGame.Scripts
                 state.Value = GameState.Success;
             }).AddTo(this);
 
-            player.CurrentSpeedMultiply.SkipLatestValueOnSubscribe()
-                .Where(_ => state.Value == GameState.Play)
-                .Subscribe(x =>
-                {
-                    SoundManager.Instance.ChangePitchBGM(x);
-                }).AddTo(this);
-
             player.OnHitItem.Where(_ => state.Value == GameState.Play).Subscribe(x =>
             {
                 if (!x.TryGetComponent<StageItem>(out var item))
@@ -272,6 +280,7 @@ namespace MyGame.Scenes.MiniGame.Scripts
                 {
                     case StageItem.Type.Obstacle:
                         player.Hit(closestPoint);
+                        SoundManager.Instance.ChangePitchBGM(0f);
                         break;
                     case StageItem.Type.Item1:
                         break;