diff --git a/sllo/Classes.py b/sllo/Classes.py
index 1dcea49..6e77d7a 100644
--- a/sllo/Classes.py
+++ b/sllo/Classes.py
@@ -1,4 +1,8 @@
 from enum import Enum
+from sys import orig_argv as argv
+from subprocess import run as execute
+from subprocess import PIPE
+from subprocess import Popen as subExecute
 
 
 class SpotifyLink:
@@ -30,9 +34,61 @@ class SpotifyLink:
         return self.__getsmth(self.SMTH.CTYPE)
 
     def __getid(self) -> str:
+        """
+        :return: Spotify content id
+        :rtype: str
+        """
         return self.__getsmth(self.SMTH.CID)
 
-    def uri(self):
+    def uri(self) -> str:
+        """
+        :return: Spotify URI
+        :rtype: str 
+        """
         ctype = self.__gettype()
         cid = self.__getid()
         return f"spotify:{ctype}:{cid}"
+
+
+class Interface:
+
+    @staticmethod
+    def __getlink() -> SpotifyLink:
+        """
+        :rtype: SpotifyLink
+        """
+        args = argv[2:]
+        if args != 1:
+            raise ValueError("Bad usage")
+        return SpotifyLink(args[0])
+
+    @staticmethod
+    def __check() -> bool:
+        """
+        :rtype: bool
+        """
+        stoud = execute("dbus-send --session --dest=org.freedesktop.DBus --type=method_call --print-reply "
+                        "/org/freedesktop/DBus org.freedesktop.DBus.ListNames | grep spotify", shell=True, text=True,
+                        stdout=PIPE).stdout
+        if stoud == "":
+            return True
+
+    def open(self) -> None:
+        """
+        :rtype: None
+        """
+        uri = self.__getlink().uri()
+        if self.__check():
+            subExecute(["spotify", f"--uri={uri}"])
+        else:
+            execute(f"dbus-send --type=method_call --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 "
+                    f"org.mpris.MediaPlayer2.Player.OpenUri string:'{uri}'", shell=True)
+
+    @staticmethod
+    def help() -> None:
+        """
+        :rtype: None
+        """
+        msg = ("\nUsage:\nslopen 'https://open.spotify.com/<type>/<id>'\n\nExample:\n"
+               "slopen 'https://open.spotify.com/track/4PTG3Z6ehGkBFwjybzWkR8?si=a4ec356b33fd49d3'")
+        print(msg)