def send_audio(self, audio: str, reply: Message=None, on_success: callable=None,
                   reply_markup: botapi.ReplyMarkup=None):
        """
        Send audio clip to this peer.
        :param audio: File path to audio to send.
        :param reply: Message object or message_id to reply to.
        :param on_success: Callback to call when call is complete.

        :type reply: int or Message
        """

        self.twx.send_audio(peer=self, audio=audio, reply_to_message_id=reply, on_success=on_success,
                            reply_markup=reply_markup)