Андрей

vk_session = vk_api.VkApi(
        token='токен группы')

    vk = vk_session.get_api()
        
    Alpha = vk.docs.getMessagesUploadServer(type='audio_message', peer_id='id моей страницы')

    with open('MyMusic.ogg', 'rb') as file:

        files = {
            'file': file
        }

        file = requests.post(Alpha['upload_url'], files=files).json()['file']

    audio_msg = vk.docs.save(file=file, title=time.time(), )

    string = 'doc' + str(audio_msg['audio_message']['owner_id']) + '_' + str(
            audio_msg['audio_message']['id'])

    vk.messages.send(random_id=time.time(), peer_id=event, message='Держи', attachment=string)