In Gurdjieff and Music Johanna Petsche examines the large and diverse body of piano music produced by Armenian-Greek spiritual teacher G. I. Gurdjieff (c.1866-1949) in collaboration with his devoted pupil Thomas de Hartmann (1885-1956). Petsche draws on a range of unpublished materials and data from original field research to critically situate and assess this music within its socio-cultural and unique religio-spiritual