diff --git a/models/song.js b/models/song.js
index 6db6f1b..d973294 100644
--- a/models/song.js
+++ b/models/song.js
@@ -1,4 +1,15 @@
 class Song {
+  id = null;
+  name = null;
+  album = null;
+  artists = [];
+  year = 0;
+  duration = 0;
+  progress = 0;
+  session = null;
+  state = null;
+  source = null;
+
   constructor(id, name, album, artists, year, duration, progress, session, state, source) {
     this.id = id;
     this.name = name;