diff --git a/assets/demo/loader.meta b/assets/demo/loader.meta
new file mode 100644
index 0000000..5947216
--- /dev/null
+++ b/assets/demo/loader.meta
@@ -0,0 +1,12 @@
+{
+  "ver": "1.1.0",
+  "importer": "directory",
+  "imported": true,
+  "uuid": "79b4904f-0bfe-47af-b5cf-6e884866c468",
+  "files": [],
+  "subMetas": {},
+  "userData": {
+    "compressionType": {},
+    "isRemoteBundle": {}
+  }
+}
diff --git a/assets/demo/loader/Main.ts b/assets/demo/loader/Main.ts
new file mode 100644
index 0000000..95f53cd
--- /dev/null
+++ b/assets/demo/loader/Main.ts
@@ -0,0 +1,18 @@
+/*
+ * @Author: dgflash
+ * @Date: 2022-07-14 10:57:43
+ * @LastEditors: dgflash
+ * @LastEditTime: 2022-07-14 16:28:43
+ */
+import { _decorator } from 'cc';
+import { Root } from '../../../extensions/oops-framework/assets/core/Root';
+
+const { ccclass, property } = _decorator;
+
+/** 音乐管理模块功能演示 oops-framework/assets/core/common/audio  */
+@ccclass('Main')
+export class Main extends Root {
+    start() {
+
+    }
+}
\ No newline at end of file
diff --git a/assets/demo/loader/Main.ts.meta b/assets/demo/loader/Main.ts.meta
new file mode 100644
index 0000000..43dac22
--- /dev/null
+++ b/assets/demo/loader/Main.ts.meta
@@ -0,0 +1 @@
+{"ver":"4.0.23","importer":"typescript","imported":true,"uuid":"11548f95-dc8d-40b5-a243-d8ea4737a579","files":[],"subMetas":{},"userData":{}}
diff --git a/assets/demo/loader/main.scene b/assets/demo/loader/main.scene
new file mode 100644
index 0000000..e01c29b
--- /dev/null
+++ b/assets/demo/loader/main.scene
@@ -0,0 +1,507 @@
+[
+  {
+    "__type__": "cc.SceneAsset",
+    "_name": "",
+    "_objFlags": 0,
+    "_native": "",
+    "scene": {
+      "__id__": 1
+    }
+  },
+  {
+    "__type__": "cc.Scene",
+    "_name": "main",
+    "_objFlags": 0,
+    "_parent": null,
+    "_children": [
+      {
+        "__id__": 2
+      }
+    ],
+    "_active": true,
+    "_components": [],
+    "_prefab": null,
+    "autoReleaseAssets": false,
+    "_globals": {
+      "__id__": 14
+    },
+    "_id": "984e383b-d959-4558-aeb1-4ceb5fabbd10"
+  },
+  {
+    "__type__": "cc.Node",
+    "_name": "root",
+    "_objFlags": 512,
+    "_parent": {
+      "__id__": 1
+    },
+    "_children": [
+      {
+        "__id__": 3
+      },
+      {
+        "__id__": 4
+      }
+    ],
+    "_active": true,
+    "_components": [
+      {
+        "__id__": 13
+      }
+    ],
+    "_prefab": null,
+    "_lpos": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_lrot": {
+      "__type__": "cc.Quat",
+      "x": 0,
+      "y": 0,
+      "z": 0,
+      "w": 1
+    },
+    "_lscale": {
+      "__type__": "cc.Vec3",
+      "x": 1,
+      "y": 1,
+      "z": 1
+    },
+    "_layer": 1073741824,
+    "_euler": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_id": "51KEOywK1E4akKtZVxf+Lk"
+  },
+  {
+    "__type__": "cc.Node",
+    "_name": "game",
+    "_objFlags": 512,
+    "_parent": {
+      "__id__": 2
+    },
+    "_children": [],
+    "_active": true,
+    "_components": [],
+    "_prefab": null,
+    "_lpos": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_lrot": {
+      "__type__": "cc.Quat",
+      "x": 0,
+      "y": 0,
+      "z": 0,
+      "w": 1
+    },
+    "_lscale": {
+      "__type__": "cc.Vec3",
+      "x": 1,
+      "y": 1,
+      "z": 1
+    },
+    "_layer": 1073741824,
+    "_euler": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_id": "72HkSn751F86VoFGmJXpeo"
+  },
+  {
+    "__type__": "cc.Node",
+    "_name": "gui",
+    "_objFlags": 512,
+    "_parent": {
+      "__id__": 2
+    },
+    "_children": [
+      {
+        "__id__": 5
+      }
+    ],
+    "_active": true,
+    "_components": [
+      {
+        "__id__": 7
+      },
+      {
+        "__id__": 9
+      },
+      {
+        "__id__": 11
+      }
+    ],
+    "_prefab": null,
+    "_lpos": {
+      "__type__": "cc.Vec3",
+      "x": 640,
+      "y": 375,
+      "z": 0
+    },
+    "_lrot": {
+      "__type__": "cc.Quat",
+      "x": 0,
+      "y": 0,
+      "z": 0,
+      "w": 1
+    },
+    "_lscale": {
+      "__type__": "cc.Vec3",
+      "x": 1,
+      "y": 1,
+      "z": 1
+    },
+    "_layer": 33554432,
+    "_euler": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_id": "04HVz/X+dO/KoC2LOzh7O1"
+  },
+  {
+    "__type__": "cc.Node",
+    "_name": "UICamera",
+    "_objFlags": 512,
+    "_parent": {
+      "__id__": 4
+    },
+    "_children": [],
+    "_active": true,
+    "_components": [
+      {
+        "__id__": 6
+      }
+    ],
+    "_prefab": null,
+    "_lpos": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 1000
+    },
+    "_lrot": {
+      "__type__": "cc.Quat",
+      "x": 0,
+      "y": 0,
+      "z": 0,
+      "w": 1
+    },
+    "_lscale": {
+      "__type__": "cc.Vec3",
+      "x": 1,
+      "y": 1,
+      "z": 1
+    },
+    "_layer": 33554432,
+    "_euler": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_id": "e73tUR45BNpa1z9e8ecKdC"
+  },
+  {
+    "__type__": "cc.Camera",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 5
+    },
+    "_enabled": true,
+    "__prefab": null,
+    "_projection": 0,
+    "_priority": 1073741824,
+    "_fov": 45,
+    "_fovAxis": 0,
+    "_orthoHeight": 413.1905781584582,
+    "_near": 1,
+    "_far": 2000,
+    "_color": {
+      "__type__": "cc.Color",
+      "r": 0,
+      "g": 0,
+      "b": 0,
+      "a": 0
+    },
+    "_depth": 1,
+    "_stencil": 0,
+    "_clearFlags": 7,
+    "_rect": {
+      "__type__": "cc.Rect",
+      "x": 0,
+      "y": 0,
+      "width": 1,
+      "height": 1
+    },
+    "_aperture": 19,
+    "_shutter": 7,
+    "_iso": 0,
+    "_screenScale": 1,
+    "_visibility": 33554432,
+    "_targetTexture": null,
+    "_id": "58hTt8B3tKnZaTs3OzCwkE"
+  },
+  {
+    "__type__": "cc.UITransform",
+    "_name": "Canvas<UITransform>",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 4
+    },
+    "_enabled": true,
+    "__prefab": {
+      "__id__": 8
+    },
+    "_contentSize": {
+      "__type__": "cc.Size",
+      "width": 1280,
+      "height": 750
+    },
+    "_anchorPoint": {
+      "__type__": "cc.Vec2",
+      "x": 0.5,
+      "y": 0.5
+    },
+    "_id": "9b8MclXbNFz593SPtnWKrD"
+  },
+  {
+    "__type__": "cc.CompPrefabInfo",
+    "fileId": "03ZMhNEpRK75Hmdzr8ZGhG"
+  },
+  {
+    "__type__": "cc.Canvas",
+    "_name": "Canvas<Canvas>",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 4
+    },
+    "_enabled": true,
+    "__prefab": {
+      "__id__": 10
+    },
+    "_cameraComponent": {
+      "__id__": 6
+    },
+    "_alignCanvasWithScreen": true,
+    "_id": "1dz15JMmpAgKNYspEOuXh6"
+  },
+  {
+    "__type__": "cc.CompPrefabInfo",
+    "fileId": "7acBC/yU9N05fc6HGd8fZS"
+  },
+  {
+    "__type__": "cc.Widget",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 4
+    },
+    "_enabled": true,
+    "__prefab": {
+      "__id__": 12
+    },
+    "_alignFlags": 45,
+    "_target": null,
+    "_left": 0,
+    "_right": 0,
+    "_top": 0,
+    "_bottom": 0,
+    "_horizontalCenter": 0,
+    "_verticalCenter": 0,
+    "_isAbsLeft": true,
+    "_isAbsRight": true,
+    "_isAbsTop": true,
+    "_isAbsBottom": true,
+    "_isAbsHorizontalCenter": true,
+    "_isAbsVerticalCenter": true,
+    "_originalWidth": 0,
+    "_originalHeight": 1280,
+    "_alignMode": 2,
+    "_lockFlags": 45,
+    "_id": "94hxkzOX9ClLtqc63q0wsQ"
+  },
+  {
+    "__type__": "cc.CompPrefabInfo",
+    "fileId": "1chkRDp1xCFqsnwJh1NVq1"
+  },
+  {
+    "__type__": "11548+V3I1AtaJD2OpHN6V5",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 2
+    },
+    "_enabled": true,
+    "__prefab": null,
+    "game": {
+      "__id__": 3
+    },
+    "gui": {
+      "__id__": 4
+    },
+    "sliderMusic": null,
+    "sliderMusicVolume": null,
+    "sliderMusicHandle": null,
+    "_id": "acg8HsU4NPupH9BY36RBkz"
+  },
+  {
+    "__type__": "cc.SceneGlobals",
+    "ambient": {
+      "__id__": 15
+    },
+    "shadows": {
+      "__id__": 16
+    },
+    "_skybox": {
+      "__id__": 17
+    },
+    "fog": {
+      "__id__": 18
+    },
+    "octree": {
+      "__id__": 19
+    }
+  },
+  {
+    "__type__": "cc.AmbientInfo",
+    "_skyColorHDR": {
+      "__type__": "cc.Vec4",
+      "x": 0.242613,
+      "y": 0.362617,
+      "z": 0.798746,
+      "w": 0.520833125
+    },
+    "_skyColor": {
+      "__type__": "cc.Vec4",
+      "x": 0.242613,
+      "y": 0.362617,
+      "z": 0.798746,
+      "w": 0.520833125
+    },
+    "_skyIllumHDR": 20000,
+    "_skyIllum": 20000,
+    "_groundAlbedoHDR": {
+      "__type__": "cc.Vec4",
+      "x": 0.241814,
+      "y": 0.361945,
+      "z": 0.798799,
+      "w": 0
+    },
+    "_groundAlbedo": {
+      "__type__": "cc.Vec4",
+      "x": 0.241814,
+      "y": 0.361945,
+      "z": 0.798799,
+      "w": 0
+    },
+    "_skyColorLDR": {
+      "__type__": "cc.Vec4",
+      "x": 0.519964,
+      "y": 0.630786,
+      "z": 0.905039,
+      "w": 0.5208
+    },
+    "_skyIllumLDR": 0.5208,
+    "_groundAlbedoLDR": {
+      "__type__": "cc.Vec4",
+      "x": 0.519544,
+      "y": 0.630484,
+      "z": 0.905069,
+      "w": 0
+    }
+  },
+  {
+    "__type__": "cc.ShadowsInfo",
+    "_enabled": false,
+    "_type": 0,
+    "_normal": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 1,
+      "z": 0
+    },
+    "_distance": 0,
+    "_shadowColor": {
+      "__type__": "cc.Color",
+      "r": 76,
+      "g": 76,
+      "b": 76,
+      "a": 255
+    },
+    "_maxReceived": 4,
+    "_size": {
+      "__type__": "cc.Vec2",
+      "x": 1024,
+      "y": 1024
+    }
+  },
+  {
+    "__type__": "cc.SkyboxInfo",
+    "_envLightingType": 0,
+    "_envmapHDR": {
+      "__uuid__": "d032ac98-05e1-4090-88bb-eb640dcb5fc1@b47c0",
+      "__expectedType__": "cc.TextureCube"
+    },
+    "_envmap": {
+      "__uuid__": "d032ac98-05e1-4090-88bb-eb640dcb5fc1@b47c0",
+      "__expectedType__": "cc.TextureCube"
+    },
+    "_envmapLDR": {
+      "__uuid__": "6f01cf7f-81bf-4a7e-bd5d-0afc19696480@b47c0",
+      "__expectedType__": "cc.TextureCube"
+    },
+    "_diffuseMapHDR": null,
+    "_diffuseMapLDR": null,
+    "_enabled": true,
+    "_useHDR": true,
+    "_editableMaterial": null
+  },
+  {
+    "__type__": "cc.FogInfo",
+    "_type": 0,
+    "_fogColor": {
+      "__type__": "cc.Color",
+      "r": 200,
+      "g": 200,
+      "b": 200,
+      "a": 255
+    },
+    "_enabled": false,
+    "_fogDensity": 0.3,
+    "_fogStart": 0.5,
+    "_fogEnd": 300,
+    "_fogAtten": 5,
+    "_fogTop": 1.5,
+    "_fogRange": 1.2,
+    "_accurate": false
+  },
+  {
+    "__type__": "cc.OctreeInfo",
+    "_enabled": false,
+    "_minPos": {
+      "__type__": "cc.Vec3",
+      "x": -1024,
+      "y": -1024,
+      "z": -1024
+    },
+    "_maxPos": {
+      "__type__": "cc.Vec3",
+      "x": 1024,
+      "y": 1024,
+      "z": 1024
+    },
+    "_depth": 8
+  }
+]
\ No newline at end of file
diff --git a/assets/demo/loader/main.scene.meta b/assets/demo/loader/main.scene.meta
new file mode 100644
index 0000000..f995636
--- /dev/null
+++ b/assets/demo/loader/main.scene.meta
@@ -0,0 +1 @@
+{"ver":"1.1.39","importer":"scene","imported":true,"uuid":"984e383b-d959-4558-aeb1-4ceb5fabbd10","files":[".json"],"subMetas":{},"userData":{}}
diff --git a/assets/main.scene b/assets/main.scene
index b923e62..a2a1958 100644
--- a/assets/main.scene
+++ b/assets/main.scene
@@ -227,7 +227,7 @@
     "_priority": 1073741824,
     "_fov": 45,
     "_fovAxis": 0,
-    "_orthoHeight": 403.5536294691224,
+    "_orthoHeight": 375,
     "_near": 1,
     "_far": 2000,
     "_color": {
diff --git a/assets/script/game/demo/Demo.ts b/assets/script/game/demo/Demo.ts
index 96d4bf3..15f59b7 100644
--- a/assets/script/game/demo/Demo.ts
+++ b/assets/script/game/demo/Demo.ts
@@ -2,7 +2,7 @@
  * @Author: dgflash
  * @Date: 2021-07-03 16:13:17
  * @LastEditors: dgflash
- * @LastEditTime: 2022-06-21 15:31:05
+ * @LastEditTime: 2022-07-14 18:18:09
  */
 import { Component, dynamicAtlasManager, EventTouch, _decorator } from "cc";
 import { tips } from "../common/prompt/TipsManager";
@@ -123,11 +123,10 @@ export class Demo extends Component {
     private btn_audio_open1(event: EventTouch, data: any) {
         oops.audio.musicVolume = 0.5;
 
-        oops.audio.playMusic("audios/Gravel", () => {
-            oops.audio.playMusic("audios/nocturne", () => {
-
-            });
+        oops.audio.setMusicComplete(() => {
+            oops.audio.playMusic("audios/nocturne");
         });
+        oops.audio.playMusic("audios/Gravel");
     }
 
     /** 背景音效 */