Monochord

The gourd is usually shaped like a round tube (bamboo, flute, thread) or rectangular box; a big head, a little clawed head; usually about 110 cm in length, diameter or width at the top of about 12.5 cm, small head about 9.5 cm; about 10.5 cm high.
 In the flock of wood and the bottom of corn, or wood or wood tung. The slightly arched flat bottom of the flute has a small hole for hanging the flute, a rectangle in the middle to release the sound at the same time as the flute moves and a space for the strings. 
Wooden boards of hardwood such as brindle or ebony are for sure and screws can be bolted for strings.

On the head there is a piece of bone or a small metal called a horse. Through the guitar, the strings are threaded and tied to the axle on the strings through the piano, this shaft is beautiful and it is hidden behind the piano.
 Today, metal strings are used to secure the strings. On the small head of the flock there is a rope made of wood or horn, called the flute or the flute.
 Feed through the first half of the dry gourd or wooden jar in the same shape and plug into a hole on the small tip of the housing.
 A fixed string of the strings in the middle of the orchestra.

When electronic technology was born, an electromagnetic induction coil with a young iron core was inserted into the spinal column with the strings at the big end to induce sound transmission through the coaxial cable. , the signal to the amplified sound through the amplifier.
 This type can only use steel wire and the disadvantage is that the sound distortion is quite large compared to the sound of the instrument without the use of electromagnetic amplifier.

Chopping rods: often bared by bamboo, giang, coconut, softwood ... People often make cotton or spiked a little to soften the sound when plucking.
 In the past or use the rod about 10 cm long, today with a variety of fast acting techniques, people usually use short rods of about 4-4.5 cm.

The bulb has a broad range of 3 octaves. Because of the overtones, the tone is beautiful, deep, seductive. The song is sad, eager, sometimes sweet love, good acting human feelings. The sound of the two octaves sounds pretty clear, even in the overtones.
 If the sound is used with the effect of stretching or reducing the strings of the strings, the tone of the bells may exceed three octaves.

Dan is suitable for lyrical, melodious melodies, however, the gray artisans can use it to perform fun songs such as dull or new songs, rich in freshness and health.
 Vietnamese knives have the sentence "The gourd people break down, hear the daughter do not listen to the choir," said the tongue easily attract the sentiment.

In the past, the gong kept the solo or choral duties, joining the traditional bands with the lute, the third, the second, or the lady ... Today some plants are equipped with electrical equipment, outdoor recital or concert with large orchestra, many instruments.

Many talented artists have used the voice of the voice of the three southern, central, northern and male voice, female voice or subdued as the immersion ...