In this paper, we present Koryphaîos, an environment that aims to facilitate composition in distributed music systems. This environment, rather than a monolithic and all-in-one solution, proposes to favor interoperability between our own platform (i.e. soundworks) and existing tools widely used by contemporary music composers and musicians. More precisely, our aim was to design an environment where the composer could use the tools they already know and master (e.g. the Bach library for Max/MSP)), to create musical pieces rendered on web-based distributed systems composed of multiple devices such as smartphones or nano-computers. First, we present our design methodology and overall architecture of the proposed environment. Second, we showcase some of the musical possibilities that it currently offers. Finally, we describe a novel and low-level extension of our framework aimed at facilitating communication and interoperability between our web-based framework and existing computer music software (i.e. Max/MSP, Ableton Live). The Koryphaîos environment is open-source 1 and released under the BSD-3-Clause license.