"The guitar is a musical instrument that typically has six strings, but four-, seven-, eight-, nine-, ten-, eleven-, twelve-, thirteen- and eighteen-string guitars also exist. The size and shape of the neck and the base of the guitar also vary, producing a variety of sounds. The two primary families of guitar types are the electric guitars and the acoustic guitars. Three main types of acoustic guitars are the classical guitar, the steel-string flattop guitar, and the archtop guitar).
"Guitars are recognized as one of the primary instruments in flamenco, jazz, blues, country, mariachi, rock music, and many forms of pop. They can also be a solo classical instrument. Guitars may be played acoustically, where the tone is produced by vibration of the strings and modulated by the hollow body, or they may rely on an amplifier that can electronically manipulate tone. Such electric guitars were introduced in the 1930s, and they have continued to have a profound influence on popular culture since then.
"Traditionally guitars have been constructed of various woods and strung with animal gut, or more recently, with either nylon or steel strings. Guitars are made and repaired by luthiers."
Illustration from a Carolingian Psalter from the 9th century, showing a guitar-like plucked instrument.
Click on the images below to hear some pretty good guitar sounds... Anna Likhacheva plays in the competition in Moscow (2003) - guitar luthier V. Kosolapov Muddy Waters at Newport Festival 1960 Guitarist Dominic Frasca playing 10 and 6 string. Sungha Jung plays 'Billie Jean' arranged by Adam Rafferty. http://www.sunghajung.com/xe/ Jimi Hendrix. Like A Rolling Stone