Jai Sri Ganesha,
Sound is a media that co exist with self and relates to ether mode as well,
Sound has its source in Shabd Brahma and events in truth of waves that goes long till the vicinity of infinity,
Even in pindrop silence sound exists in truth with self, sound of silence speaks much louder than words in the cult of life,
Aspirants and devotees enter in the truth of self by Mook Satsang to reach many mystic realities that exist along with,
May Lord bless all,
Thanks, please