def METHOD_NAME(self, song):
    self.song = song
    pat_str = self.config_get(self.CFG_PAT_PLAYING, self.DEFAULT_PAT)
    pattern = Pattern(pat_str)
    status = (pattern.format(song) if song
                   else self.config_get(self.CFG_STATUS_SONGLESS, ""))
    self._set_status(status)