The fingering is very similar to the recorder and the blowing to the trumpet; very small mouthpieces were used, similar in size to the ones used in horns /French horns/.
One of the most beautiful wind instrument ever made (in my opinion), its sound encloses a human voice, an oboe and a trombone. Modern masters playing this instrument, for example William Dongois or Bruce Dickey, perform the most unbelievable, masterly pieces. Its biggest development was noticed in the 16th and 17th century, unfortunatelly due to a plague in Europe in the 17th century the biggest masters of this instrument died and it started to be forgotten. It was rarely used in later centuries for example by J.S. Bach and in the 19th century by Mendelsohnn-Bartholody.
It was produced in foursizes: soprano, alto, tenor, bass called serpent.
It was available in two versions: straight and curved. The curved type was most often covered with leather, in the exclusive version it was sometimes made entirely of ivory.
The GT cornets is made of sycamore, plum or pear wood.