Author: Jon Weinel and Robert Ratcliffe'Mutations' is a composition by composer Robert Ratcliffe which manipulates scored piano material to create mutations, which are then performed with a Disklavier. This real-time live performance patch, designed in collaboration with Rob Ratcliffe and Jon Weinel, and programmed by Jon Weinel. It enables Mutations to be performed live, incorporating the original piano performance extracts and the mutated disklavier material.