diff --git a/dataTypes.ts b/dataTypes.ts
index 8cc4173..cf5b407 100644
--- a/dataTypes.ts
+++ b/dataTypes.ts
@@ -11,7 +11,7 @@ export class Song {
 }
 
 export class PlayingSong extends Song {
-    constructor(type: SongType, title: string, songId: string, image: string, public position: number) {
+    constructor(type: SongType, title: string, songId: string, image: string, public length: number, public position: number) {
         super(type, title, songId, image);
     }
 }
diff --git a/dist/dataTypes.d.ts b/dist/dataTypes.d.ts
index b252342..f6e5313 100644
--- a/dist/dataTypes.d.ts
+++ b/dist/dataTypes.d.ts
@@ -10,6 +10,7 @@ export declare class Song {
     constructor(type: SongType, title: string, songId: string, image: string);
 }
 export declare class PlayingSong extends Song {
+    length: number;
     position: number;
-    constructor(type: SongType, title: string, songId: string, image: string, position: number);
+    constructor(type: SongType, title: string, songId: string, image: string, length: number, position: number);
 }
diff --git a/dist/dataTypes.js b/dist/dataTypes.js
index 5664084..cf5281a 100644
--- a/dist/dataTypes.js
+++ b/dist/dataTypes.js
@@ -33,8 +33,9 @@ var Song = /** @class */ (function () {
 exports.Song = Song;
 var PlayingSong = /** @class */ (function (_super) {
     __extends(PlayingSong, _super);
-    function PlayingSong(type, title, songId, image, position) {
+    function PlayingSong(type, title, songId, image, length, position) {
         var _this = _super.call(this, type, title, songId, image) || this;
+        _this.length = length;
         _this.position = position;
         return _this;
     }