http://www.youtube.com/user/omkaryes#p/u/7/AiXF8swJAxEGuaranteed to de-stress.
http://hinduism.about.com/od/omaum/a/meaningofom.htm(...)According to the Mandukya Upanishads, "Om is the one eternal syllable of which all that exists is but the development. The past, the present, and the future are all included in this one sound, and all that exists beyond the three forms of time is also implied in it".
The Music of Om
Om is not a word but rather an intonation, which, like music, transcends the barriers of age, race, culture and even species. It is made up of three Sanskrit letters, aa, au and ma which, when combined together, make the sound Aum or Om. It is believed to be the basic sound of the world and to contain all other sounds. It is a mantra or prayer in itself. If repeated with the correct intonation, it can resonate throughout the body so that the sound penetrates to the centre of one's being, the Atman or soul. (...)
http://www.spiritsound.com/aum.html