| Digest Nr | Subject and Author |
|---|
 |
| 2008.07.20.08 | Design and Installation of Harmonic Freins, from Tom Griffith |
| 2001.09.29.04 | How to Make Harmonic Freins, from Marc Elbasani |
| 2001.09.02.04 | FS: Harmonic Freins Etc., from Marc Elbasani |
| 2000.07.18.01 | Palliard Expressive Harmonic Cylinder Music Box, from Douglas Henderson |
| 2000.07.17.01 | Palliard Expressive Harmonic Cylinder Music Box, from James L. Brady |
| 1999.10.07.12 | Harmonic Trap, from Andy Taylor |
| 1999.10.06.10 | Harmonic Trap, from Dick Merchant |
| 1998.07.08.05 | Seek Harmonic Teapot, from Bob Fitterman |
| 1997.10.23.03 | The " Harmonic Mechanism" Piano in Paris, from Joyce Brite |
| 1997.09.24.03 | The " Harmonic Mechanism" Piano in Paris, from Jon Page |
| 1997.04.19.05 | Gavioli's Harmonic Brake: The Gavioli Frein, from Jan Kijlstra |
|
