A drum tuner is described. The drum tuner includes: (i) a hub gear; (ii) two or more differential gears communicatively coupled to the hub gear and at least one of the two or more differential gears capable of engaging a tuning mechanism of a drum; and (iii) wherein, during an operational state of the drum tuner, rotation of the hub gear rotates at least one of the two or more differential gears to activate the drum's tuning mechanism.