"AUM (or OM) is the Great Gong
Tone of Life"
-- Dane Rudhyar
OM is the combined resonant tone
of Life Force that fills the Infinite Living Universe.
ONG is that tone impinging on Matter, creating the physical Universe
which resonates
like a gong from atom to galaxy. A Gong is a cosmic engine of power
and is appropriately
named after the sound that it makes. It is an instrument that releases
this all powerful OM
resonance which, although constituting all materiality, is not limited
to finite manifestation.
It produces Holistic Tones which have 'fullness' and to which the
whole being responds.
By playing our body, mind and emotions as an organic gong, we are
lead to the OM power
of our Greater Self. Just as a gong struck repeatedly Gongongongongong....soon
produces
a continuous OM. By practicing Gong Yoga we are brought back to the
source of greater
health and mental balance, our True Selves.
(from http://holistic-resonance.com/theorigin.html
)