Mattin has been played on NTS in shows including Bokeh Versions, featured first on 20 March 2019. Songs played include Die Form, Die Sich Selbst Formt, February and May .

Mattin is a Basque artist working with noise and improvisation. His work seeks to address the social and economic structures of experimental music production through live performance, recordings and writing. Using a conceptual approach, he aims to question the nature and parameters of improvisation, specifically the relationship between the idea of ''freedom''and constant innovation that it traditionally implies, and the established conventions of improvisation as a genre. Mattin considers improvisation not only as an interaction between musicians and instruments, but as a situation involving all the elements that constitute a concert, including the audience and the social and architectural space. He tries to expose the stereotypical relation between active performer and passive audience, producing a sense of strangeness and alienation that disturbs this relationship.