The chair chosen to meet these requirements was the 13113 Sensó model, designed by Marta Vilallonga, who is part of the team at Ricardo Bofill’s Taller de Arquitectura. Vilallonga developed the chair especially for this project. Apart from its elegant design, the model reinforces the acoustic qualities of the auditorium. Sensó is fully upholstered in natural leather, without wooden components, but nevertheless has excellent acoustic properties. Thanks to the built-in resonator, the chair’s acoustic behaviour is identical regardless of whether or not it is occupied. According to Ricardo Bofill, ‘the Sensó seat is an object in harmony with the building, with a design that is functional, comfortable and minimalist.’