diff --git a/backend/src/app.py b/backend/src/app.py
index 436d5d7..ac1dfaa 100644
--- a/backend/src/app.py
+++ b/backend/src/app.py
@@ -222,6 +222,15 @@ def add_song():
 
         add_song_in_db(song)
 
+    if len(room.tags) > 0:
+        tag_ok = False
+        for tag in song.tags:
+            if tag in room.tags:
+                tag_ok = True
+
+        if not tag_ok:
+            return error("Song genre does not belong to this room")
+
     ## add the song in the room if does not exists
     if song.uuid not in room.songs:
         room.songs[song.uuid] = (song, 1)  # start with one vote