This year's key attraction is The Helix Tree, designed by Melbourne-based illumination designer Bruce Ramos. The Helix Tree is a 13m high steel structure with interactive illumination that responds to sound. The tree varies in colour and intensity based on the volume and pitch of the sound it hears.
Various choirs from around Melbourne have been invited to sing under the tree and demonstrate this interactive display of sound and light.
Also see last year's Light in Winter: Close Encounters 2012