When you work with neon, bending the glass tubes by heating
and blowing through, adding mercury and gas, and finally
close the circuit, you’ll end up with a neon tube. Adding
electricity to it, in High Voltage, is essential, and you can see
it running through, in a constant loop circuit. You visualise
electricity in a way, and even color it, similar to the way you
create tone colors on a guitar.
— Joris Van de Moortel