Jason Maling works in the expanded field where — through the interface of technology, screens and a sound system — the sonic and the visual are conducted before a live audience. 

Diagrammatica was inspired by physics diagrams, but it's grown into a beast: part drawing, part durational performance and part musical composition. 

And it all takes place underground — in a gallery known rather ominously as Slot 9 — sandwiched between two rail lines under Melbourne's commuter transit hub, Federation Square.