A capo for use with a stringed instrument having a plurality of strings a neck comprising a fingerboard and a back comprises a string-engaging arm, a clamping arm, and a pivotal connection to pivotally interconnect a string-engaging arm and clamping arm. The string-engaging arm adapted to in use extend across the fingerboard above the strings and in use press against the strings. The clamping arm is adapted to, in use, extend across engage the back of the neck. The pivotal connection is disposed, in generally towards one side of the neck and at a position behind the fingerboard inboard of a side edge of the fingerboard. This arrangement and location of the pivotal connection reduces the forces required in use to operate the capo.