Timepiece or watch (1000) or music box including an acoustic display mechanism (100), for a striking timepiece (1000), including a plurality of control-pieces (1) for the same time measurement parameter, staged in parallel planes, and further including melody selection means (3), arranged to be operated by a user or by the timepiece movement, controlling or prohibiting, at a given moment, access of the control-pieces (1) to a common snail (2) corresponding to said time measurement parameter, to allow only one of the control-pieces (1) to operate at least one lever (4) controlling the motion of a hammer to play a melody that is specific thereto or to activate at least one gong that is specific thereto.