Oboe da Caccia
As I get older I learn about things that I thought I should have when I was younger. In high school I played Oboe. I knew of the English Horn, and a B-flat version, but never heard of the Oboe da Caccia. I just learned of this instrument watching a YouTube upload of Bach's St.Matthews Passion. It looks as if someone is playing a goose. The two instruments come in about three minutes into the video with the soloist.
Here is the Koopman - Amsterdam Baroque Orchestra and Soloists playing:
