Mantra 'Om Namah Shivaya' is being chanted by Sri Sri Ravi Shankar (The Art of Living). This fragment's length is about 1 minute and can be played in a loop. It is slow chanting pranayama: we are doing only three breaths per minute for the whole cycle of slow chanting (usually we do 16 breaths per minute!). This technique (Mantra-Pranayama) allows you to relax your mind.
Note. This practice, like any other yoga practices, is recommended to learn and do under the guidance of a guru (teacher). If you are not trained in chanting mantras or not passed the 'The Art of Living' programs, it is proposed to find a guru (teacher) at first and pass training programs.
Significance of the ‘Om Namah Shivaya’ Mantra
Om Namah Shivaya is one of the most powerful mantras. Chanting this mantra builds the energy in your system and also clears the environment. (This mantra is not only limited to Hinduism, as Hinduism is not a religion but a way of life). People have been chanting this mantra for thousands of years.
Om Namah Shivaya, these words are very important because ‘Na’, ‘Ma’, ‘Shi’, ‘Va’, ‘Ya’, these five letters indicate the five elements – Earth, Water, Fire, Air and Ether and 'Om' is the sound of the universe. ‘Om’ means peace and love. So the ‘Om Namah Shivaya’ chanting is done to harmonize the five elements in the environment. When there is peace, love and harmony in all the five elements, then there is bliss and there is joy!
// "Understanding Shiva" e-Book (The Art of Living - https://www.artofliving.org/what-is-shiva)