Interactive, meditative and musical projection that deals with space exploration as well as our quest for meaning and transcendence, “Star Tracks - L'Astrophone” takes the form of a celestial barrel organ. For the Greeks, the cosmos came to life according to principles which they deduced from their observations and which they applied to mathematics, music and the life of the city in general. Inspired by ancient Greek astronomy and the theory of the harmony of the spheres, this work offers a combination of mechanical and algorithmic cogs using the Milky Way as a musical score. By playing with the speed and direction of rotation of the device, the audience can generate musical gems… but also dissonance and chaos.