How sound can have a powerful effect on your state of mind?

It’s not a secret that sound can produce one of the most intense reactions in the listener. In my piece of writing I would like to focus on psychological affect sound has on us. I would like to divide my essay into parts that will focus on different areas of examined by me topic such as: healing sounds of nature, how singing affects us emotionally and how sound changes our mind-set. Wheater agitated emotions are positive or negative, sound has always an impact on us, loud abrupt noise that will stop us in our track or sound of dogs playing around bringing happiness. „…Sound is a series of vibrations that travel into the ear and get converted into electrical signals that are sent to the brain via the vestibulocochlear nerve…When used in the right way sound has the ability to shift our perception of the world and ourselves.”(Dean Griffiths, psychreg.org)