is often not reached in the space of a lifetime. Without a shadow of doubt, the Grande Sonnerie is one of the greatest of watchmaking complications. Since the very beginning of their partnership, Robert Greubel and Stephen Forsey have been thinking out what their own, resolutely contemporary interpretation of this regal complication could be. For eleven years, the Grande Sonnerie shaped their day-to-day life. Eleven years, during which they worked in the utmost secrecy to assemble the 935 parts of this timepiece, striving in particular to achieve absolute harmony between the movement, the exterior and the acoustics.