Joseph Nechvatal is described as a post-conceptual digital artist. He created sound piece viral symph0ny between 2006 and 2008, on UbuWeb here. A short excerpt:

It was created using a custom artificial life C++ software based on ‘the viral phenomenon model’. I am not sure I understand what this model is – it seems like this term is referring to a set of objects/ actants that self-replicate (or convert other objects into copies of themselves). I can’t find anything more specific about the piece, or figure out how sound was generated, but one thing I did learn is that I would like to know more about artificial life, specifically (for now) the parametricization of biological processes that can be closely tethered to specific geographies.