Photograph of the music score for Heretic, transcribed by Martha Graham's musical director Louis Horst.
Dancer Bessie Schoenberg recalled, "The music Louis (Horst) found for her (Graham), 'Old Breton Song', had the thrust and sparse melodic content she needed; by repeating it several times with intervals of silence, she could restate her theme with the mounting crescendo of a pitched battle."
**Bretons Tetus from "Chasons de la Fleur-de-Lys" arranged by Charles de Sivry (composer unkown)