The City of Rotterdam commissioned Studio RAP to design the main auditorium of Theater Zuidplein. Studio RAP designed the theatre's acoustic walls, which in one fluid movement embrace the audience and the artist. The project was designed using algorithms, which resulted in a rippling ocean of thousands of triangles. All the phases of this project have been realized fully digitally, from design to realization. Through the algorithmic design of Studio RAP, engineering firm Arup made its acoustic and structural calculations and RAP generated all production data for the contractor Aldowa. The advantage of this method is that everything remains digital and therefore variable. This makes it possible to make changes without any problems until late in the realization process. In this way, different design scenarios can easily be tested for planning and technical and financial feasibility. Together with Arup, Studio RAP simulated countless virtual theater hall variants. The hall was, as it were, digitally kneaded after which the best variant was chosen. Using advanced software, calculations were made to measure the effect of a certain curvature in the design on the reflection of the sound of a speaker or musician on the stage. Afterwards this main shape is translated into smaller triangles which in turn are adjusted. The walls don’t just affect the auditorium’s soundscape: they also break the light in countless color tones inside the theater to create a warm and dynamic play of colors. Because each triangle is unique and folded at a unique angle, the light is refracted in different shades of red. Like a stylised cliff face, the acoustic walls enclose the main auditorium of the new theatre, which is made from an enormous aluminium-composite puzzle, consisting of 6,000 uniquely shaped pieces.