I recently watched this helpful video, by Sally Jackson (historical
bassoon player and specialist), giving an overview of the development of the
bassoon from Baroque, to Classical and then modern. Although this is a very short
video, it helps to give an idea of where our much loved modern bassoon comes
from, and the great thing is that Sally plays each instrument in turn so you
get to compare the sound of the instruments through the three different periods
in time. Here is the link:
Enjoy!