diff --git a/AquaMai/Utils/PractiseMode.cs b/AquaMai/Utils/PractiseMode.cs
index efc714d4..fec2f650 100644
--- a/AquaMai/Utils/PractiseMode.cs
+++ b/AquaMai/Utils/PractiseMode.cs
@@ -1,6 +1,11 @@
-using AquaMai.Fix;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Reflection;
+using AquaMai.Fix;
 using AquaMai.Helpers;
 using HarmonyLib;
+using Manager;
 using MelonLoader;
 using Monitor;
 using Process;
@@ -13,6 +18,9 @@ public class PractiseMode
 {
     private static double repeatStart = -1;
     private static double repeatEnd = -1;
+    private static float speed = 1;
+    private static List<CriAtomExPlayer> players = [];
+    private static MovieMaterialMai2 movie;
 
     private static void SetRepeatEnd(double time)
     {
@@ -37,6 +45,45 @@ public class PractiseMode
         repeatEnd = -1;
     }
 
+    private static void SetSpeed()
+    {
+        foreach (var player in players)
+        {
+            player.SetPitch((float)(1200 * Math.Log(speed, 2)));
+            player.UpdateAll();
+        }
+
+        movie.player.SetSpeed(speed);
+    }
+
+    private static void SpeedUp()
+    {
+        speed += .05f;
+        if (speed > 2)
+        {
+            speed = 2;
+        }
+
+        SetSpeed();
+    }
+
+    private static void SpeedDown()
+    {
+        speed -= .05f;
+        if (speed < 0.5)
+        {
+            speed = 0.5f;
+        }
+
+        SetSpeed();
+    }
+
+    private static void SpeedReset()
+    {
+        speed = 1;
+        SetSpeed();
+    }
+
     private class DebugWindow : MonoBehaviour
     {
         private GUIWindow window;
@@ -52,6 +99,10 @@ public class PractiseMode
             window.Button("循环开始", () => repeatStart = DebugFeature.CurrentPlayMsec);
             window.Button("循环结束", () => SetRepeatEnd(DebugFeature.CurrentPlayMsec));
             window.Button("循环解除", ClearRepeat);
+            window.SameLine(1, 1, 1);
+            window.Button("加速", SpeedUp);
+            window.Button("减速", SpeedDown);
+            window.Button("速度重置", SpeedReset);
         }
 
         private void OnGUI()
@@ -62,6 +113,15 @@ public class PractiseMode
 
     private static DebugWindow debugWin;
 
+    [HarmonyPatch(typeof(GameProcess), "OnStart")]
+    [HarmonyPostfix]
+    public static void GameProcessPostStart()
+    {
+        repeatStart = -1;
+        repeatEnd = -1;
+        speed = 1;
+    }
+
     [HarmonyPatch(typeof(GameProcess), "OnUpdate")]
     [HarmonyPostfix]
     public static void GameProcessPostUpdate(GameProcess __instance, GameMonitor[] ____monitors)
@@ -86,4 +146,40 @@ public class PractiseMode
             }
         }
     }
+
+    [HarmonyPatch(typeof(NotesManager), "UpdateTimer")]
+    [HarmonyPostfix]
+    public static void NotesManagerPostUpdateTimer(bool ____isPlaying, Stopwatch ____stopwatch, ref float ____curMSec, ref float ____curMSecPre, float ____msecStartGap)
+    {
+        var num = 0d;
+        if (____isPlaying && ____stopwatch != null)
+        {
+            num = (double)____stopwatch.ElapsedTicks / Stopwatch.Frequency * 1000.0 * speed;
+        }
+
+        ____curMSecPre = ____curMSec;
+        ____curMSec = (float)num + ____msecStartGap;
+    }
+
+    [HarmonyPatch]
+    public static class PlayerObjCreate
+    {
+        public static MethodBase TargetMethod()
+        {
+            var type = typeof(SoundCtrl).GetNestedType("PlayerObj", BindingFlags.NonPublic);
+            return AccessTools.Method(type, "Create");
+        }
+
+        public static void Postfix(CriAtomExPlayer ___Player)
+        {
+            players.Add(___Player);
+        }
+    }
+
+    [HarmonyPatch(typeof(MovieController), "Awake")]
+    [HarmonyPostfix]
+    public static void MovieControllerPostAwake(MovieMaterialMai2 ____moviePlayers)
+    {
+        movie = ____moviePlayers;
+    }
 }