Mass #2 in G op 28, Agnus Dei,
Soprano, fagotto solo, strings
Simrock, Bonn, 1828, pp 74-89
(Stadtbibliothek zu Leipzig, PM 6996)
There is a detailed description of this work in Die Allgemeine Musikalische Zeitung 1818, 20: 766-78. (Agnus Dei p774)
Gottfried Weber was well known as a theoretician with interest and expertise in acoustics.
His writings on the acoustics of the bassoon were a stimulus to Almenraeder’s reforms
that led to the development of the modern German bassoon. This challenging obbligato
from about 1830 may have been a try-out for those reforms.
Weber, Gottfried. "Wesentliche Verbesserungen des Fagotts." Caecilia 2 (1825): 123-40.
Weber, Gottfried. “C. Almenraeder’s weitere Fagott-Verbesserungen” Caecilia 9 (1828) 128-130.