The sinking of the Titanic in fact prompted the first use of wireless in sea rescue. As Bryars points out in his sleevenotes, Marconi had conceived of telegraphy as a spectral science. He ‘became convinced that sounds once generated never die, they simply become fainter and fainter until we no longer perceive them. Marconi’s hope was to develop sufficiently sensitive equipment, extraordinarily powerful and selective filters I suppose, to pick up and hear these past sounds. Ultimately, he hoped to be able hear Christ delivering the Sermon on the Mount.’