This summer the final touches are finally done on my permanent light installation for the HK20 building in the center of Copenhagen. The functionalist building was drawn in 1937 by architect Fritz Schlegel and was originally the institution Overformynderiet, that worked as guardians of minors and women before emancipation in 1899. It has been completely renovated by The Danish Building Agency. The 81 lamps (references the year 1899 : 18 - 99 = - 81) are made in brass, glass and solid oak. They are programmed to follow the cycle of the season during the year and play different light patterns according to eastern astrology and their symbolic material properties. The purple waves in the ceiling are cut to in the same pattern as theta brain waves, that can occur during deep meditation, dream or as a natural state of small children. Red and blue symbolizes feminine and masculine qualities in the Korean symbol taeguk and mixed together they become purple; also a prominent color in the 1960/70s psychedelic period. From 2019 the HK20 building will be the residence of the Danish Ministry of Employment and the Ministry of Climate and Energy.