Fretted (2015), a live coding performance using generative processes. It will revolve around the real time manipulation of “Viola Da Gamba” recordings performed by Mark Summers (UK). This instrument, which is a cello-sized fretted instrument, can trace its roots back to the Renaissance and Baroque era. The only prepared material that the performance will use, in terms of software, is a few lines of code that analyse higher level musical characteristics of the audio material in real time. As the performance evolves the data that emerges from the analysis is tapped in the sound synthesis parameters interacting with the sonic outcome. Following this fully improvised performance strategy it is hard to predict the musical outcome thus the performance is more likely an exploration of interaction affordances between the performer and computer and sonic material rather than a depiction of a preconceived idea of the composer.