This is the sound of light signals from stars, transposed into the range of hearing.
A technique known as ‘asteroseismology’ makes it possible for scientists to study the internal structure of stars, based on an interpretation of their frequency spectra. Nikola Tesla believed these light signals are created by the primordial cosmic energy he discovered more than 100 years ago. This is a link to the research paper.
Listen to the sound of singing stars here: