A guitar is a stringed musical instrument that typically has six strings, although variations exist with more or fewer strings. It is played by strumming or plucking the strings with fingers or a pick. Guitars can be classified into two main types: acoustic and electric. Acoustic guitars produce sound naturally through their hollow bodies, while electric guitars require an amplifier to enhance their sound. Guitars are widely used in various music genres, including rock, blues, jazz, and country. They are popular for both solo performances and as part of a band. Many musicians, such as Jimi Hendrix and Taylor Swift, have made significant contributions to the popularity of the guitar in modern music.