Timepiece comprising a timepiece movement comprising a motion-work driving a release cam, and a striking-work that comprises: - a main striking mechanism to perform a main striking function which is a petite sonnerie or a grande sonnerie or a minute repeater, and comprising feeler spindles gathering time information on time references driven by said timepiece movement, controlled by a main strike control mechanism, which is arranged to release a main strike at instants programmed by said movement, or on demand, and wherein the sequence of each strike is determined by the information gathered by said feeler spindles on said references, and which comprises a strike control unit, said main striking mechanism comprising a release lever which, in automatic operating mode, is pivoted by said release cam, to cause the pivoting, under the action of a first click comprised in said release lever, of a detent ratchet comprised in said strike control unit, to release the train of said strike unit, - a secondary striking mechanism for the acoustic display of a secondary strike or an alarm, different from the main strike, said secondary striking mechanism being arranged to at least partly use said main striking mechanism to play said secondary strike or alarm, and being controlled by a secondary strike control mechanism, - striking mode selecting means arranged to be operated by a user to select a main striking mode or a secondary striking or alarm mode, or a silent mode, - an isolating mechanism between said main strike control mechanism and said secondary strike control mechanism, arranged to allow the exclusive operation, at a given instant, of either said secondary strike control mechanism, or said main strike control mechanism, said isolating mechanism comprising a first isolator pivotably mounted in a bridge of said timepiece and arranged, in an armed position to prevent said feeler spindles from searching for information on said references, and, in a disarmed position, to allow said feeler spindles to enter into contact with said references, characterized in that said selection means comprise a selector lever and a pivoting selector part and in that said isolating mechanism includes a large control rod arranged to drive, via the pivoting selector lever, said pivoting selector part which makes the selection between, on the one hand, a first click for pivoting a detent ratchet to release a train of said striking unit of the main striking mechanism, and on the other hand, a second click for driving a secondary strike or alarm release wheel, said release wheel being independent of said detent ratchet, said first click and said second click being carried, in two parallel and close planes, and each returned by a spring (109A; 209A), by said single release lever. - a main striking mechanism to perform a main striking function which is a petite sonnerie or a grande sonnerie or a minute repeater, and comprising feeler spindles gathering time information on time references driven by said timepiece movement, controlled by a main strike control mechanism, which is arranged to release a main strike at instants programmed by said movement, or on demand, and wherein the sequence of each strike is determined by the information gathered by said feeler spindles on said references, and which comprises a strike control unit, said main striking mechanism comprising a release lever which, in automatic operating mode, is pivoted by said release cam, to cause the pivoting, under the action of a first click comprised in said release lever, of a detent ratchet comprised in said strike control unit, to release the train of said strike unit, - a secondary striking mechanism for the acoustic display of a secondary strike or an alarm, different from the main strike, said secondary striking mechanism being arranged to at least partly use said main striking mechanism to play said secondary strike or alarm, and being controlled by a secondary strike control mechanism, - striking mode selecting means arranged to be operated by a user to select a main striking mode or a secondary striking or alarm mode, or a silent mode, - an isolating mechanism between said main strike control mechanism and said secondary strike control mechanism, arranged to allow the exclusive operation, at a given instant, of either said secondary strike control mechanism, or said main strike control mechanism, said isolating mechanism comprising a first isolator pivotably mounted in a bridge of said timepiece and arranged, in an armed position to prevent said feeler spindles from searching for information on said references, and, in a disarmed position, to allow said feeler spindles to enter into contact with said references, characterized in that said selection means comprise a selector lever and a pivoting selector part and in that said isolating mechanism includes a large control rod arranged to drive, via the pivoting selector lever, said pivoting selector part which makes the selection between, on the one hand, a first click for pivoting a detent ratchet to release a train of said striking unit of the main striking mechanism, and on the other hand, a second click for driving a secondary strike or alarm release wheel, said release wheel being independent of said detent ratchet, said first click and said second click being carried, in two parallel and close planes, and each returned by a spring (109A; 209A), by said single release lever.