When an authentic field drum sound is called for, call on the roar and punch of a Black Swamp Symphonic field drum. These drums embody the true spirit of a field drum sound within a classic design aesthetic. The heart of Black Swamp's sound comes from a soft roundover bearing edge that is cut into a thin 5-ply maple shell with 5-ply reinforcement rings. The thin shell serves to produce a deep and robust tone, while the reinforcement rings add punch and definition.