This paper describes the Parallaxis Score System, part of the authors ongoing research into to the development of technological tools that foster creative interactions between improvising musicians and predefined instructional texts. The Parallaxis platform places these texts within a networked, interactive environment with a generalised set of controls in order to explore and devise ontologies of network performance. As an interactive tool involved in music production the score system itself undergoes a functional transformation and becomes a distributed meta-instrument in its own right, independent from, yet intrinsically connected to those instruments held by the performers.