An acoustic-drum tuning method, apparatus, and a system are disclosed which are configured to tune different regions of the drumhead membrane separately or the drumhead membrane in its entirety. Various embodiments of the acoustic-drum tuning assembly include a single adjustment feature to vary the drumhead tension uniformly around the drumhead's periphery and include multiple other adjustment features to vary the drumhead tension non-uniformly around the drumhead's periphery In some embodiments the tuning mechanism includes a semi flexible hoop or rim, for example a semi-rigid metal hoop, that restraints the drumhead membrane with respect to the drum. The restraining hoop may be pulled uniformly away from the drumhead to uniformly increase the tension in the drumhead membrane and/or may be pulled non-uniformly away from the drumhead to increase the tension in the drumhead membrane non-uniformly.