The installation, which occupies a 35-meter stretch of the 237-meter corridor, combines a sound and visual experience with live music and technology. This initiative, called Ars Gràcia, has been launched as a three-month pilot project to improve user experience and support metro musicians.
Mayor Jaume Collboni and the President of Transports Metropolitans de Barcelona (TMB) and Deputy Mayor, Laia Bonet, inaugurated the space. The technology generates music and images in real time using artificial intelligence based on the movement of passengers, turning each user into a musical note.
“"We want people to want to pass through here. Until today, people tried to avoid this eternal corridor, and we want that to change."
The proposal also provides a space for live music performance, equipped with an LED screen and an amplification system. This allows members of the Associació de Músics del Carrer i del Metro de Barcelona (AMUC) to perform under better sound conditions. Currently, 50 musicians already have a personalized card to register their performances.
When there are no live performances, the ARS System takes over, combining AI and algorithmic composition to create music and videos based on user flow. According to David Hernández, project manager, the goal is to make the route “lighter, more fun, and safer,” as the installation will be active throughout the metro's operating hours.
