This dissertation-assemblage is a rhizo-text of a rhizo-enquiry. It is part musicoethnography and part philosophical analysis. It looks at the work(ing practices) of four contemporary musickers. It situates a rhizo-analysis of their work, as described in four vignette studies, in discussions of, inter alia, rhizo-aesthetics, cyborgs, and boundaries in Entangled Network Space. It includes a speculative consideration of what might happen to music and musicking in the future, especially in the light of current trends in the expansion of technicity in their methods of composition, production, and distribution. It draws particularly on the philosophical writings of Alfred North Whitehead, Gilles Deleuze (particularly in association with Félix Guattari), Bernard Stiegler, Bruno Latour, Manuel DeLanda, Christopher Vitale, and Ian Hodder.