The reacTable * is a novel multi-user electro-acoustic musical instrument with a tabletop tangible user interface. In this paper we will focus on the various collaborative aspects of this new instrument as well as on some of the related technical details such as the networking infrastructure. The instrument can be played both in local and remote collaborative scenarios and was designed from the very beginning to serve as a musical instrument for several simultaneous players. 1 The reacTable* The reacTable*, is a novel multi-user electro-acoustic musical instrument with a tabletop tangible user interface. Several simultaneous performers share complete control over the instrument by moving physical artefacts on the

and other research outputs Issues and techniques for collaborative music making on multi-touch surfaces