Some of Cevdet Erek's site-specific installations and sonic environments, placed at the intersection of sound, sculpture, and architecture, evolve around the idea of 'sound ornamentation'. In his installations sound is not background but architecture itself - something built, inhabited, and experienced by bodies in motion. The publication offers an overview of Erek's projects from the past fifteen years that include sound ornamentation ideas. The artistic intervention consists of a poster showing Erek's design for the sound ornamentation on the façade of the Secession. Text: Cevdet Erek, Ramona Heinlein, Gabriele Knapstein, Luigia Lonardelli, Eva Scharrer, Sandeep Sodhi