G. I. Gurdjieff / T. de Hartmann Musique pour le piano (1922-1927) Editions Schott. Quatre volumes de partitions:

Vol I : Asian songs and rythms,

Vol II : Music of the Sayyids and the dervishes,

Vol III : Hymns, prayers and rituals,

Vol IV : Hymns for a great temple and other selected works.