At the time of my third visit to Melbourne, the public plaza Federation Square (opposite Flinders Street railway station) was playing host to a light and sound public art exhibit called Volume.
Volume was created by the UK-based group United Visual Artists. It consists of luminous LED columns which generate light and sound in response to people moving through them. This gallery contains three images of the artwork.
The soundtrack of Volume was arranged by Neil Davidge and Robert Del Naja of Massive Attack.
More information can be found on the Federation Square web site.