Abstract: A shell for drum according to the present invention includes a laminated plywood-panel including a plurality of single-panels having different densities, the plurality of single-panels being jointed in decreasing order of density from a center portion in a thick direction of the laminated plywood-panel toward an outermost portion and an innermost portion, such that a single-panel having a highest density is arranged at the center portion, and single-panels having lowest densities are arranged at the outermost portion and the innermost portion.

Abstract: A drum is formed using a drum shell having openings at both ends thereof, across which drumheads are stretched under tension. At least one air hole is formed at a prescribed position of the exterior surface of the drum shell, allowing air flow to occur between the inside and the outside of the drum shell. At least one tone color change member, which is composed of cloth and rubber sheets, is attached to the interior wall of the drum shell in connection with the air hole; hence, the air hole is closed by the tone color change member. Thus, it is possible to appropriately change the tone color of drum sound without substantially changing the size of the drum, which can be designed similar to any types of conventionally known drums.

Abstract: A snare strainer adapted to a snare drum is equipped with two strainers, which are attached to the opposite positions on the circumferential exterior of a cylinder of the snare drum and which control a snappy member to be selectively brought into contact with or separated from the backside head opposite to the drumhead. Herein, a moving base vertically moves along a fixed base attached to the circumferential exterior of the cylinder; holding members, which are tightly joined together so as to hold the terminal of the snappy member, are supported by a support member fixed to the moving base. The holding members are engaged with the support member due to a magnetic attraction exerted by permanent magnets. This makes it possible for the person to detachably attach the holding members to the support member without using tools; hence, it is possible to improve the handling of the snare strainer.