def _on_unmap(self, widget):
     """
         Disconnect signals
         @param widget as Gtk.Widget
     """
     ArtistAlbumsView._on_unmap(self, widget)
     if self.__art_signal_id is not None:
         App().art.disconnect(self.__art_signal_id)
         self.__art_signal_id = None
     if self.__party_signal_id is not None:
         App().player.disconnect(self.__party_signal_id)
         self.__party_signal_id = None
     if self.__added_signal_id is not None:
         App().player.disconnect(self.__added_signal_id)
         self.__added_signal_id = None
     if self.__removed_signal_id is not None:
         App().player.disconnect(self.__removed_signal_id)
         self.__removed_signal_id = None