In recent years, artists and communities have expressed the desire to work with tools that facilitate co-creation and allow distributed community performances. These performances can be spread over several physical stages, connecting them on real-time towards a single experience with the audience distributed along them. This enables a wider remote audience consuming the performance through their own devices, and even grants the participation of remote users in the show. In this paper we introduce the Co-creation Stage, a webbased tool that allows managing heterogeneous content sources, with a particular focus on live and on-demand media, across several distributed devices. The Co-creation Stage is part of the toolset developed in the Traction H2020 project which enables community performing art shows, where professional artists and nonprofessional participants perform together from different stages and locations. Here we present the design process, the architecture and the main functionalities of the tool as well as the results of the first user evaluation with Opera houses and artists. CCS CONCEPTS• Human-centered computing → Collaborative and social computing; Computer supported cooperative work; • Computer systems organization → Real-time systems.

This work presents the Co-Creation Space, a multilingual platform for professional and community artists to 1) generate raw artistic ideas, and 2) discuss and refect on the shared meaning of those ideas. The paper describes the architecture and the technology behind the platform, and how it was used to facilitate the communication process during several user trials. By supporting ideation sessions around media items guided by a facilitator and allowing users to express themselves and be part of the creation of an artistic product, participants were enabled to access new cultural spaces and be part of the creative process. CCS CONCEPTS• Human-centered computing → Collaborative and social computing systems and tools.

HiruXR is a Javascript library aimed at creating collaborative and interactive data visualizations in eXtended Reality (XR). Developers can use it to create environments where multiple users can communicate and collaborate around one or many visualizations.We want to open these environments to users with 2D displaying and interaction capabilities, e.g. allowing them to collaborate from their laptops and phones with others using Head Mounted Displays (HMD). But displaying the same interface is not optimal, users should see an interface according to their device capabilities. Therefore, we are steering the design of HiruXR towards supporting responsiveness without putting all the burden in application Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for proft or commercial advantage and that copies bear this notice and the full citation on the frst page. Copyrights for third-party components of this work must be honored. For all other uses, contact the owner/author(s).

Artistic co-creation empowers communities to shape their narratives, however HCI research does not support this multifaceted discussion and reflection process. In the context of community opera, we consider how to support co-creation through the design, implementation, and initial evaluation of the Co-Creation Space (CCS) to help community artists 1) generate raw artistic ideas, and 2) discuss and reflect on the shared meaning of those ideas. This work describes our user-centered process to gather requirements and Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the owner/author(s).