Flexibility is essential if one have to play in temperaments, differing from the modern equal one, and music making in small groups requires sounds which are excellently blending. This is
achieved by choosing the correct measurements, by treating the materials correctly and by the thickness of the walls of the instruments. All the measurements are copied from, or based on the
best preserved and qualitatively best original instruments to be found in European collections.
Besides the instruments already included in the program, it is possible to make replicas of any existing original instrument. Apart from replicas a cheaper production-methode has also been devised. With this instruments only the bell is hammered. The cilindrical parts are made from seamless tubes. This implies extensive time-saving and result in instruments that sound
reasonably authentic, at a lower price.
With historical instruments, their form and beauty are as functional as their musical qualities.
A good instrument "deserves" its decorations; they complete the replica.