def get_ssml_string(text, language, font):
    """Pack text into a SSML document
    Args:
        text: Raw text with SSML tags
        language: Language-code, e.g. de-DE
        font: TTS font, such as KatjaNeural
    Returns:
        ssml: String as SSML XML notation
    """
    ssml = f'<speak version="1.0" xmlns="https://www.w3.org/2001/10/synthesis" xml:lang="en-US"><voice name="{language}-{font}">{text}</voice></speak>'
    return ssml