“In order to try and send some useful information, I made a list of 7 elements that are important to humans: Hydrogen, carbon, oxygen, nitrogen, silicon, iron, uranium. I then took the atomic number of each of element, and multiplied it by 50, and used this number as the frequency for a sine wave, i.e. hydrogen 50Hz, carbon 300Hz etc. The notes are combined so that a chord builds up over the 10s, with Kate’s vocal, which speaks for itself: How many times must we be shown the outcome of a pattern? The pulses at the start signify 50 as the multiplier, so that the song can share some information about life on earth.“