 In modern notation, the meters would be irregular; often music in the "musique mesurée" is left unbarred in modern transcription, or given bar lines only at the end of phrases.In addition to their use of ancient metres, composers of "musique mesurée" also used later interpretations of classical musical modes in order to move the emotions of their listeners, as it was described in ancient Greek sources.While "musique mesurée" was created and sung by a small group of people for a limited audience, and for the most part in secret, it was to have a profound effect on French music for the next hundred years.