Selected artists in the Eufònic / Lo Pati 2020 call for artist-in-residencies, they spent ten days in the middle of the Delta working on “Cartography of a ray”, a research work that reflects on lightning. In collaboration with MónNatura Delta and the Lightning Research Group of the UPC, a subjective portrait of the territory through a map created from data collected by the LMA (Lightning Mapping Array) sensor system during the Glòria storm that gave rise to a atypical, musical and poetic film-concert.