Adolphe Sax
The E♭ clarinet established a niche for itself in the military band, particularly in Germany, from about 1805, whereas the bass clarinet would be perfected by Adolphe Sax in 1838. Therefore, the defining moment with regard to the foundation of the full clarinet choir was the advent of Fontaine-Besson's successful clarinet-pedale design, exhibited in Paris in 1889 and patented in 1891.