Geographical Melodies - (2010)

In 1977 NASA sent two gold-plated phonograph records containing images and audio into space. These records travelled onboard Voyager probes I and II. The discs were conceived as time capsules intended to communicate the story of our world to extraterrestrials. 

The images below represent Thomson's system for translating the longitude and latitude of a location into a melody. Music composed from this system appears on Thomson's vinyl album Platinum Metres - a reworking of NASA's golden records.