CHORUS is a Coordination Action which aims at creating the conditions of mutual information and cross fertilisation between the projects that will run under Strategic objective 2.6.3 and beyond the IST initiative. CHORUS workplan includes the set up of a co-ordination and information exchange platform (concertation meetings, newsletter, website) to enhance the interactions and to invoke discussions between the key players of the IST Cluster and thus to stimulate the creation of the European Research Area (ERA).An important task of the project consists of supporting the preparation of an analysis and a roadmap for the realisation of Audiovisual search engines in EU. That activity will need a multi-disciplinary (societal, economic, regulatory and technological) approach and will imply the participation of major Stakeholders of the domain through the creation of a Think-Tank. That structure, to which several representative organisations have already agreed to participate, will contribute to give an industrial relevance to the coordination action and its visions.Interaction and dissemination will be further ensured through the set-up of a perennial conference and dedicated workshops addressing a large community which complement the coordination instruments proposed by CHORUS.The consortium represents established and well-reputed research institutions and consultancies with a broad range of intellectual and technological expertise in the area, both as regards concrete actions and policy development and track records of national, Union-wide, and international cooperation and activity. Those actors have the experience and the network to achieve a wide audience for the efforts under discussion, and possess the experience and authority both as regards research and industrial weight to guarantee the attention and consideration of said audience. These two factors ensure timely dissemination and take-up of the most worthy ideas and results of the Coordination Action.