The guitar is one of the most popular musical instruments in use today, and it covers a wide range of styles of music - rock music, country music and flamenco music all use the same technology. me instrument to create totally different sounds. The guitar is an instrument that is presented since the 1500's, but it has undergone many transformations in its history.In the soundboard there is a large hole called ; sound hole. The hole is normally round and centered, but pairs of F-shaped holes as in a violin, are sometimes visible. Attach & eacute; & Agrave; the soundboard is a room called the bridge, which serves as an anchor for one of the ends of the 6 strings. The bridge has a thin, tough inner piece. Call & eacute; the saddle, which is the part on which the strings rest.When the strings vibrate, the vibrations travel by means of the saddle on the bridge, then on the soundboard. The whole soundboard is now vibrant. The body of the guitar forms a hollow box of resonance that amplifies the vibrations of the soundboard. If you touch a tuning fork on the bridge of the guitar, you can prove that the vibrations of the soundboard are what produces the sound of the acoustic guitar.