Each set of explosions was calculated to paint a different picture

This youtube clip documents (terribly) the (thundering) opening of the Arab Museum of Modern Art in Doha, Qatar, where Chinese artist Cai Guo-Qiang put a large "explosion event". The display is controlled by microchip-explosives which are programmed to create the volatile and exciting stormy, powder-splatters in the shapes of pyramids, rainbows and the like. Rather more exciting than nocturnal fireworks.