An acoustic guitar is a stringed musical instrument that produces sound through the vibration of its strings. It typically has a hollow body, which amplifies the sound naturally without the need for electronic amplification. Acoustic guitars come in various shapes and sizes, with the most common types being the dreadnought, concert, and classical guitars. They are often made from wood, which contributes to their unique tonal qualities. The instrument is played by strumming or plucking the strings with fingers or a pick. Acoustic guitars are popular in many music genres, including folk, country, and rock. They are often used for solo performances, as well as in bands, making them a versatile choice for musicians.