Musical or striking mechanism comprising an electric generator system

A musical or striking mechanism for a timepiece or musical box, comprising an energy source delivering a mechanical torque and means transmitting mechanical torque from said energy source to a wheel set generating music or a striking wheel set, the mechanism further comprising a wheel set governor, said governor being configured to regulate, around a reference speed value, the pivoting speed of the wheel set about a pivot axis, and comprising means for braking the wheel set configured to return the pivoting speed thereof to the reference speed, wherein the wheel set governor includes a system comprising an electric generator whereof a rotor is mechanically connected to the energy source delivering the mechanical torque, and an electronic circuit for regulating the rotation speed of the generator, and

• wherein the mechanism is further configured to recover electricity from braking the wheel set and supply that electricity to any of a light-emitting element and a loudspeaker.