The recent discovery of original bassoons made in Barcelona in the 18th century and the researches made on the musical life of the city during this period give us the opportunity to understand how the instrument was conceived and which role it had in its musical context. When were this bassoons made? By whom? For what purpose? Which repertoire could have been played with them? Do they share any common characteristics? How are these linked to their function in the music of that time? All these and other questions are answered in this research by putting together an organological analysis of the instruments, the repertory that has been preserved and different written sources concerning the historical and musical context and the instrument making. This research will be presented in form of research exposition.