Acoustic guitars have six strings that are played by strumming or plucking. According to the Free Dictionary, the acoustic guitar produces its sound through the sounding board and is not amplified by any electrical means.
There are three types of acoustic guitar: the classical nylon-string, steel-string and the archtop guitars. The tone of an acoustic guitar is produced by the vibration of the six strings. The sound is naturally amplified by the body of the guitar, which acts as a resonating chamber. It is played by strumming the six strings with the right hand while fretting the arm strings with the left hand. The classical six-string acoustic guitar is often played as a solo instrument.