The " Hall - recorder " The name " Hall - recorder " stands for the characteristics of the recorders built by Oswald Van Olmen. It is the result of 17 years of investigation into the essence of the sound of the recorder : a sound with resonance, energy. A dynamic concept : " Hall - recorder " is a new vision on the concept of the recorder, an energetic concept : sound with energy. The characteristics are : - balance in form - harmony in its properties - timeless beauty Artistic design : " Hall - recorder ", a masterpiece: voicing, windway, edge…are sculptured by hand, the tone - holes formed by hand, the bore and the outside finished by hand. Each " Hall - recorder " is a unique copy, a piece of art : sound sculptured in substance.