Kingma System
We believe Tetractys is the only company to specialise in works written specifically for Kingma System instruments.
The links below give information regarding Kingma System instruments, and further details can also be found on Eva Kingma's website
The Kingma System alto flute: a practical guide for composers and performers
The Kingma System bass flute: a practical guide for composers and performers
The Kingma System alto flute: a practical guide for composers and performers
The Kingma System bass flute: a practical guide for composers and performers