An important current running along and across Tarek Atoui’s sound experimentations is collaboration. A great majority of his work involves and evolves through participation of others. These can be designers, builders, musicians, field recordist, listeners. It is often the case that his installations offer themselves as very direct relational platforms as they can be activated by the audiences and other artists. For the exhibition Waters’ Witness in Serralves, a group of Portugal based musicians and artists as well as students from art schools, all are invited to interact and dialogue with the works installed. Along with collaborative and educational workshops, performances are organized throughout the entire period of the exhibition and artists able to engage with a diversity of sounds inhabiting the exhibition at different stages, progressing from its winter awakening up to the midsummer demise.

On this occasion, Tarek Atoui returns to the exhibition to activate it himself with a sound performance made in collaboration with Lendl Barcelos.

Lendl Barcelos is a sound artist, writer & ,kataphysician in Porto. Lendl twists tongues toward a thickened sense-making, taking notes of an aural culture vibrating beyond just the ear. Lendl was part of Council's Infinite Ear—alongside Tarek Atoui, Allison O'Daniel, Myriam Lefkowitz & Valentina Desideri—a project based on the premise that Deafness is an expertise on sound. Lendl has also presented work at Tate Britain (London), Centrocentro (Madrid), Garage (Moscow), Inkonskt (Malmö), Q-O₂ (Brussels), Pedreira (Porto), and has been published with Urbanomic, re:press and MIT.