a war horn with five heads

A voice in the shape of an Iron Age war horn whose head you choose. Click HEAD to a boar, a serpent, a dragon, a stag or a wolf, and the horn's voice changes with it. Each is a physical model you play with V/OCT, GATE and BREATH, its head drawn in 3D on the module's own screen.

https://daylightnoise.com/carnyx/