Jens writes from Malmö to let me know about the Laser Harp Pages, which contain most of the information you'd need to build yourself a Jean-Michelle Jarre Laser Harp (except, perhaps, an answer to the question 'why?'). It will cost you about €500 (although a proper 'frameless' one will cost nearer €5,000), but that doesn't include installing a smoke machine in your studio. Inevitably, JarreLook, the British JMJ tribute band, have this very impressive-looking MIDI laser harp in a 4U rack case.