Interaccion were a duo of Jose Iruretagoyena and Carmen L. Fernandez de Velasco active in Madrid throughout the mid-80es. They made two selfreleased cassettes "Extension de los Significados" compling works from the period 1980-83 and "Ancestrales" compiling works of 1984-85 period as well as a video tape called "Lucis et Umbrae".