An acoustic guitar does not have an external device to be heard, instead it uses a soundboard which is a wooden piece mounted on the front of guitar's body. Many acoustic guitars available today feature pickups which enables the player to amplify the guitar sound. The sound production in an acoustic guitar is accomplished by using a soundboard, resonant cavity and the sound box. There are several subcategories under acoustic guitar like, classical and flamenco guitars, steel string guitars, folk guitar, twelve-string guitar and arched-top guitar.
Guitars are one the main instruments used in many forms of pop music, rock, jazz, blues, country music and mariachi music. They can be also played as a solo classical instrument. Acoustic guitars are typically made out of various woods and strung with animal gut, or with nylon or steel strings. Some of the popular brands that make guitar are Fender, Gibson and Yamaha.
Since acoustic guitar does not have any amplification methods, piezo and magnetic pickups are mounted under the bridge saddle of the acoustic guitar, which can be plugged into a mixer or amplifier. It is often said that acoustic guitar can be played by any guitar player and can be used in any form of music.
Modern acoustic guitars are very much different from the historic guitars, as their construction is more like that of electric guitar, to produce greater sound volume.