The buccina was a hybrid of the horn and trumpet and was anciently made out of a shell. However, it was later crafted by horn and later wood or metal to imitate the shell. The instrument was curved, making it louder and easier to play for the buccinator. Its purpose was predominantly to announce day and night. Additionally, the instrument was also blown at funerals and both before and after sitting down for meals like a dinner call.
-Cornu (horn)
The cornu was a wind instrument, anciently made of horn and later crafted of brass. The instrument was large and curved in a C-shape. The series of notes were produced through the modification of embouchure rather than through the use of holes or keys. The classicum, a Roman signal,