Thomas de Hartmann (Composer, Arranger) - Short Biography
Thomas de Hartmann | Spotify
Why Has Ukranian Composer Thomas de Hartmann Been So Neglected? : Interlude
The Music of GURDJIEFF / de HARTMANN Hymns, Prayers and Dances - YouTube
Gurdjieff's Music for the Movements - Channel Classics Records
On Thomas de Hartmann
Gurdjieff / De Hartmann – The Music Of Gurdjieff / De Hartmann (1985, Vinyl) - Discogs
Thomas & Olga de Hartmann | Product categories | Bennett Books
Gurdjieff / De Hartmann: Complete Music for the Piano - YouTube
![Gurdjieff / De Hartmann - Persian Song [AUDIO] - YouTube](https://i.ytimg.com/vi/CKghwBTXbWA/hqdefault.jpg "Gurdjieff / De Hartmann - Persian Song [AUDIO] - YouTube")
Gurdjieff / De Hartmann - Persian Song [AUDIO] - YouTube
Thomas de Hartmann: A Composer's Life
On Olga de Hartmann
The Music Of Gurdjieff / De Hartmann | Light In The Attic Records
Thomas De Hartmann | Light In The Attic Records
Thomas de Hartmann (Composer, Arranger) - Short Biography
The Thomas de Hartmann Project
Thomas de Hartmann (1885-1956) : "Rituals of a Sufi Order" piano (3 extracts) - YouTube
PDF) Gurdjieff and Music: The Gurdjieff/de Hartmann Piano Music and its Esoteric Significance | Johanna Petsche - Academia.edu
On Olga de Hartmann
Thomas de Hartmann on Apple Music
The Thomas de Hartmann Project
Thomas de Hartmann - Wikipedia
Gurdjieff / De Hartmann - Holy Affirming, Holy Denying, Holy Reconciling - YouTube
Thomas de Hartmann Project - Home | Facebook
Gurdjieff / De Hartmann: Complete Music for the Piano - Brilliant Classics
Thomas de Hartmann Project - Home | Facebook
Thomas de Hartmann | Spotify
