Light has never been neutral in a church. In the Gospel of John, Jesus says: “I am the light of the world.” From that formulation onward, light has carried a theological weight that few other physical phenomena bear. The medieval church builders oriented their naves toward the east, toward the sunrise, toward the horizon from which salvation was expected to come. The windows were not placed to meet a practical need for daylight but to stage light as theophany, as divine presence made visible in stone and glass.

Lux Nova reverses this relationship. Instead of light serving the liturgy, it serves the sound. A camera sensor captures the natural light falling through the church’s windows. Brightness, color temperature and spatial distribution are translated in real time into music modelled on the church organ. In the hour of dusk, only the deepest registers sound, a solitary pedal point in an empty and listening nave. In strong sunlight, voice after voice enters, and four melodic voices move through ecclesiastical modes that shift with the light: the darkest keys at dawn and dusk, the brightest at midday sun. The church becomes an instrument played by the sky.

In Finnekumla Church, the work’s premiere venue, the altar window carries colored motifs that filter light through glass and pigment. The church’s oldest preserved inventory, the baptismal font from the late 12th century, bears the runic inscription Andreas gerði mik, Andreas made me. Nine hundred years later, a sensor captures the light resting on his work and translates it into music that has never sounded before and will never sound again.

The music is created in real time. Nothing is pre-recorded, nothing repeats. Every note is a direct response to the light at the moment it falls. A cloud drifting past the window changes the harmony. A visitor stepping into the room casts a shadow that lowers the key. The light returns, and the sound rises. The work exists only in the present, in the unbroken conversation between sky and space, and disappears in the same moment it arises. There is no recording to return to, no repetition to anticipate. In an age moving at ever greater speed, this becomes a quiet reminder of the temporary, of the value of presence and of being here, right now, in this particular light.

The installation is site-specific. Every room has its own light, its own acoustics, its own windows. Lux Nova in Finnekumla sounds different from how it would in another church, in another city, under another sky.

Credits:
Cha Blasco: Concept and art direction, sound design and programming.

Jónatan Petersson: Construction and development.