Sound has been used as a tool for meditation for thousands of years. Whether through the singing of mantras, the use of Tibetan singing bowls, or by blowing melodies on the Native American flute, these techniques all have the same intention: to move us from a state of imbalance into a state of balance.
The root cause of your problems
The Buddha understood that problems don't arise from outside objects. Instead, the root cause of your problems is an imbalanced mind, constantly reacting to outside (as well as inside) objects. If you want something that is not there for example you create an imbalance between your desire and the real world, causing tension and the experience of stress, resulting in all sorts of mental and physical problems.
By practicing meditation you can train your mind to stay focused and calm, and learn to accept reality the way it is (as opposed to how you would like it to be). This creates balance between your inner perspective and the outer world, relaxing the mind and releasing tension.
In Chinese and Hindu cultures, these tensions are said to create blockages in your energetic body. This energetic body is where our life force exists, commonly referred to as Qi, Chi or prana. When your life force cannot flow freely, this will again translate into physical and mental disease.
Different symptoms can be alleviated by drugs and physical treatments, but new problems will keep coming to the surface in different forms and changing symptoms, until the root cause of the disease is addressed: our mind.
Entering your mind with the Native American Flute
Sound, and music, have a strong and direct effect on the human mind. They can change the way you perceive the world in only a few seconds. Just think of your favorite song and imagine the effect it has on you. Sound helps you focus and has the power to bring you into a different state of awareness.
What makes the Native American Flute so unique is that it's such an easy instrument to play. You just blow it and there is a sound. And thanks to the pentatonic tuning, with any combination of the basic fingerings you will create harmonious music.
So thinking about techniques and theory becomes obsolete when playing the Native American Flute. Your mind focuses on sound and feelings only, and calms down by meditating this way.
When your mind is balanced and relaxed, there is space for old tensions to come to the surface. Focusing on the world inside, you give expression to these feelings, letting them flow naturally into music.
Not trying to create, just accepting your reality and expressing it. In this way you are balancing your mind, releasing tension and opening your heart, reaching a deeper understanding of yourself and healing the root cause of your problems, by the simple act of playing music.
In Zen tradition, playing the flute even evolved into a practice named 'Suizen' or 'Blowing Zen'. Playing the flute was even the primary form of meditation practice for the komusō, known as the 'priests of nothingness'.
Sound meditation is more accessible than "standard" cross-legged breathing meditation, because there is common ground with western people: music. Sitting still and focussing on your breath can be extremely challenging for someone entering with a western mind. It stands in sharp contrast with our busy way of living.
Playing music is more active and it is more interesting than simply sitting still, so the mind will not get bored or distracted as easily, making it a more suitable way for active-minded people to enter into meditation. To help promote an even deeper state of meditation, try playing a Native Flute tuned to 432 Hertz.