The unique voice of Hein Braat is universal and highly appreciated worldwide.
At the Canadian website Meditaid.com you can find beautiful artistic multimedia projects supported by Hein's mantras. A website not only beautifully designed, but also very artistic and inspiring.
www.meditaid.com

Inspiring video about OM: OM

Sound and music consist of vibrations, the more vibrations per second, the higher the pitch. The unit for this is the Hertz, abbreviated Hz. 432 Hz is the natural "keynote" in the universe, as opposed to 440 Hz, which is the standard in the music nowadays. In 1939, they say, the Nazis determined 440 Hz as the keynote in the music, until then 432 Hz was the standard often worldwide. Many protests of prominent musicians didn't help unfortunately. This theory is rather controversial. Read more here.

About 2000 years ago Pythagoras already wrote down the mathematical patterns of music, but now modern scientists managed to make music into mathematical shapes. read more here, here and here.