The primary focus of the symphony orchestra hall is the listener. Our main objective was to achieve an entirely new acoustic standard, tailored specifically for symphony orchestra performances of the highest caliber. While the building and its designated space were not novel, they encompassed a volume characterized by intricate geometric shapes. We adopted a "lego constructor" philosophy, wherein, in collaboration with acousticians (the acoustic aspect of the project overseen by the "Akustika plus" team), we meticulously devised several standard elements such as rhombuses, triangles, and both smooth and ribbed planes. Subsequently, we methodically assembled the interior using these components, adjusting their placement—adding or subtracting as necessary—to achieve a harmonious blend of acoustical excellence and aesthetic appeal.