See: https://core.telegram.org/bots/api#sendaudio

        :param audio: Same as ``photo`` in :meth:`telepot.aio.Bot.sendPhoto`

async def sendAudio(self, chat_id, audio,
                        caption=None,
                        parse_mode=None,
                        duration=None,
                        performer=None,
                        title=None,
                        disable_notification=None,
                        reply_to_message_id=None,
                        reply_markup=None):
        """
        See: https://core.telegram.org/bots/api#sendaudio

        :param audio: Same as ``photo`` in :meth:`telepot.aio.Bot.sendPhoto`
        """
        p = _strip(locals(), more=['audio'])
        return await self._api_request_with_file('sendAudio', _rectify(p), 'audio', audio)