According to Zen Music For Inner Balance,
Stress Relief and Relaxation by Vyanah
Sound is a Harmonic Healer
Wave forms and frequencies permeate everything from the smallest sub-atomic particles to the largest structures – through solid objects and energy fields – even our thoughts and emotions. When we are feeling good, all aspects of our being can be said to be in harmony. When we are experiencing discomfort on any level, or sickness occurs, the vibrations of certain sounds can help bring us back to a harmonic, healthy state.
Music calms, relaxes and helps to sleep
Relaxing music induces sleep. Relaxing Deep Sleep music is safe, cheap and easy way to beat insomnia. Many babies, children, teens, and adults who suffer from insomnia find that relaxing music helps them. Slow, beautiful, soft, soothing music assists them to fall asleep. Researchers have shown that just 45 minutes of relaxing music before bedtime can make for a restful night. Relaxing music reduces sympathetic nervous system activity, decreases anxiety, blood pressure, heart and respiratory rate and may have positive effects on sleep via muscle relaxation and distraction from thoughts.
Music and the mind-body connection
The sound of relaxing music and nature sounds distracts your mind and induces a physical state of calmness. Relaxing music reduces the activity of the nervous system resulting in a decrease in anxiety, heart rate, slower breathing and lower blood pressure much like a state of meditation. Vyanah's music, nature sounds, rain sounds, light piano, and easy listening instruments used in these tracks gives you the ultimate relaxation. His music is great for massage therapy, and his music will help you relax your mind and body.
Mantra Meditation
Silently repeating a mantra as you meditate is a powerful way to enter the silence of the mind. As you repeat the mantra, it creates a mental vibration that allows the mind to experience deeper levels of awareness. As you meditate, the mantra becomes increasingly abstract and indistinct, until you’re finally led into the field of pure consciousness from which the vibration arose.
Favorite mantras are: Om Namaha Shivay, Om Gurvay Namaha, Om Suryay Namaha, Om Shanti Shanti Shanti, Om Shanei Namaha, Om, Gayatri Mantra, Om Mani Padme Hum, Medicine Buddha Mantra, Om Dum Durgayei Namaha, Ek Ong Kar Sat Gur Prasad. -- Source.