diff --git a/backend/auth/session.py b/backend/auth/session.py
index 2f72fd9..b41ecf7 100644
--- a/backend/auth/session.py
+++ b/backend/auth/session.py
@@ -58,6 +58,14 @@ class SessionData():
 
         return self.__access_token
 
+    def __eq__(self, other):
+        if not isinstance(other, SessionData):
+            return False
+
+        return (self.__access_token == other.__access_token and
+                self.__refresh_token == other.__refresh_token and
+                self.__expires_in == other.__expires_in)
+
 
 class SessionManager():
     __current_session: SessionData
diff --git a/backend/endpoints/spotify_api.py b/backend/endpoints/spotify_api.py
index a6af4cd..82cafbf 100644
--- a/backend/endpoints/spotify_api.py
+++ b/backend/endpoints/spotify_api.py
@@ -1,4 +1,6 @@
 import os
+import urllib.parse
+from email import header
 
 import requests
 from auth.session import SessionData, SessionManager
@@ -45,9 +47,14 @@ def callback(code: str):
     expires_in = token_info.get("expires_in")
 
     # Salva access_token in sessione o database per usi futuri
+    old_session = SessionManager.instance().get_current_session()
     SessionManager.instance().set_session(SessionData(access_token, refresh_token, expires_in))
+    session = SessionManager.instance().get_current_session()
 
-    return {}
+    return {
+        "changed": session != old_session,
+        "access_token":  session.access_tokens,
+    }
 
 
 @music_router.get("/search")
@@ -96,3 +103,21 @@ def current_song():
         return requests.get(url, headers=header).json()
     except Exception as e:
         print(e)
+
+@music_router.get("/add_queue_track")
+def add_queue_track(song_id: str):
+    try:
+        params = {
+            "uri": f"spotify:track:{song_id}"
+        }
+        url_encoded_params = urllib.parse.urlencode(params)
+        url = f"{SPOTIFY_AUTH_URL}/me/player/queue{url_encoded_params}"
+
+        header = {
+            "Authorization": "Bearer " + SessionManager.instance().get_current_session().access_tokens,
+            "Content-Type": "application/json"
+        }
+
+        return requests.post(url, headers=header).json()
+    except Exception as e:
+        print(e)
\ No newline at end of file