"Earth Sound Earth Signal is a study of energies in aesthetics and the arts, from the birth of modern communications in the nineteenth century to the global transmissions of the present day. Douglas Kahn begins by evoking the Aeolian sphere music that Henry David Thoreau heard blowing along telegraph lines and the Aelectrosonic sounds of natural radio that Thomas Watson heard through the first telephone [....]"

via #MELCAT which categorizes it under "radio noise".

https://elibrary.mel.org/search/i?SEARCH=0520257553