*Ancient cultures understood the power of harmonics. Stringed instruments are particularly rich in harmonics. In the bible, David is said to have played the harp to heal King Sauls depression. Orpheus played the lyre, another stringed instrument in Ancient Greek mythology. In India, Saraswati, the Goddess of wisdom and music, is seen playing the Veena, a stringed instrument. <span class="plainlinks">[http://www.youtube.com/watch?v=cGBkLoonZXI Example : Tríptico medieval para arpa]</span>
* Khöömii is an amazing style of overtone/harmonic singing where one person sings two or more distinct pitches at the same time. It originates among the nomads of the central Asian plateau, particularly the Altai and Sayan mountain regions of Mongolia and Tuva. The nomads of these parts have discovered how to sing melodies that arise from the universal overtone or harmonic series. Listen to your own overtones as you discover the unknown depths and heights of your own voice through these enchanting sounds. <span class="plainlinks">[http://www.youtube.com/watch?v=gQUgtEBbPi4 Example : Khöömii]</span>
* The harmonium is an Indian instrument that is used as an accompaniment to chanting Sanskrit mantras. It is a keyboard instrument like a miniature organ which works with the use of bellows. These keep the air circulating through the banks of reeds inside. The harmonium can be played to create a tune or a continuous drone sound. The drone is particularly suited to accompany chanting or raga singing. In traditional Indian chanting the harmonium is accompanied by the tablas (Indian drums), which create a rhythm. The combined sound of voices chanting accompanied by harmonium and tabla creates a tremendous feeling of spiritual upliftment.
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