Bret Battey’s “Estuaries” series of audiovisual compositions (2016-22) and two additional installations were based in part on the exploration of unique algorithmic approaches.His OptiNelder video filter visualises mathematical optimisation processes applied to video or mathematical “terrains”. His Nodewebba software links mathematical-feedback pattern generators to help create emergent musical behaviours. Battey discusses how these tools were part of his investigation of his idea of “fluid audiovisual counterpoint” and finding fruitful intertwining of “event and object” thinking and “continuum, texture and gesture” thinking in combining music and image.