In 1999, architect Jaafar Chalabi collaborated with Nacho Duato on Multiplicity: Silence and Forms of Emptiness.  The piece - a dance - explored architectural and musical themes of the Baroque through the set’s voluptuous geometries and J.S. Bach’s life story.
It was the site — Weimar, Germany — of this commissioned dance work that inspired the idea of an homage to Bach; this in turn informed the musical score, the choreographic variations and fugue, and Chalabi’s exploration of convex and concave folds, creating convoluted interior and exterior spaces within the scaffold-supported curtain wall.