The starting point is Praia Azul, located in Leça da Palmeira, near the Port of Leixões. This space features natural characteristics that evoke an acoustic shell, inviting the public to listen to the sea as if it were a concert—where the sea takes on the role of performer and natural elements, such as rocks and sand, function as instruments. An in-situ sound installation, conceived by architect and sound artist Mélanie Métier and Porto-based artist Vicente Mateus.