Bathe deeply in that ocean of sound
which is even now vibrating within you,
permeating the space of the heart.
The ear that is tuned by rapt listening
learns to hear the song of creation.
First like a hand bell,
then subtler like a flute,
then subtler still as a stringed instrument,
eventually as the buzz of a bee.
Entering this current of sound, the Listening One
forgets the external world, and becomes
absorbed into internal sound,
and then absorbed in vastness
like the song of the stars as they shine.
~ The Radiance Sutra—- vijnana bhairava tantra—part XV