A structure comprising: a first structural element; a second structural element; a sound-attenuating structural connector comprising: a first sheet ; a second sheet opposing the first sheet , an inner surface of the second sheet spaced apart from an inner surface of the first sheet , the inner surface of the second sheet facing the inner surface of the first sheet ; and a solid piece of visco-elastic sound-attenuating vibration damping material joining the first sheet and the second sheet , such that no part of the first sheet is in contact with the second sheet , the vibration damping material extending along the inner surface of the first sheet ; wherein the first sheet further comprises an extended portion extending away from the vibration damping material along a plane parallel to the lateral plane of the vibration damping material ; the first sheet attached to the first structural element by a fastener connected to the extended portion; and the second sheet attached to the second structural element, characterised in that a plurality of channels extends into the inner surface of each of the first sheet and second sheet , wherein the vibration damping material extends into each channel , wherein the sheets do not form any mutually interlocking structures, and wherein opposing channels are partially aligned and are formed as dovetail channels. a first structural element; a second structural element; a sound-attenuating structural connector comprising: a first sheet ; a second sheet opposing the first sheet , an inner surface of the second sheet spaced apart from an inner surface of the first sheet , the inner surface of the second sheet facing the inner surface of the first sheet ; and a solid piece of visco-elastic sound-attenuating vibration damping material joining the first sheet and the second sheet , such that no part of the first sheet is in contact with the second sheet , the vibration damping material extending along the inner surface of the first sheet ; a first sheet ; a second sheet opposing the first sheet , an inner surface of the second sheet spaced apart from an inner surface of the first sheet , the inner surface of the second sheet facing the inner surface of the first sheet ; and a solid piece of visco-elastic sound-attenuating vibration damping material joining the first sheet and the second sheet , such that no part of the first sheet is in contact with the second sheet , the vibration damping material extending along the inner surface of the first sheet ; wherein the first sheet further comprises an extended portion extending away from the vibration damping material along a plane parallel to the lateral plane of the vibration damping material ; the first sheet attached to the first structural element by a fastener connected to the extended portion; and the second sheet attached to the second structural element, characterised in that a plurality of channels extends into the inner surface of each of the first sheet and second sheet , wherein the vibration damping material extends into each channel , wherein the sheets do not form any mutually interlocking structures, and wherein opposing channels are partially aligned and are formed as dovetail channels. <EOS>