Thomas de Hartmann - Vrije Geluiden - VPRO
Thomas de Hartmann - Wikipedia
Gurdjieff - De Hartmann Vol 04: Meditation, par Alain Kremski - YouTube
Thomas de Hartmann | Spotify
Thomas De Hartmann music, videos, stats, and photos | Last.fm
Gurdjieff - De Hartmann Piano Music - YouTube
On Olga de Hartmann
Thomas De Hartmann music, videos, stats, and photos | Last.fm
Hartmann's operation - Wikipedia
The Gurdjieff Legacy Foundation Archives
On Olga de Hartmann
Thomas de Hartmann: A Composer's Life
Fabulous de Hartmann Premieres on Toccata from Kuchar and the Lviv Philharmonic - Classics Today
Why Has Ukranian Composer Thomas de Hartmann Been So Neglected?
![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 Discography | Discogs
Gurdjieff / De Hartmann – The Music Of Gurdjieff / De Hartmann (1985, Vinyl) - Discogs
The Music Of Gurdjieff / De Hartmann | Light In The Attic Records
Gurdjieff / De Hartmann: Complete Music for the Piano - YouTube
Thomas de Hartmann | Spotify
The Chamber Music of Thomas de Hartmann by Elan Sicroff on Apple Music
Thomas de Hartmann | Spotify
Thomas de Hartmann on Apple Music
Sacred Honey | Alessandra Celletti
