The guitar is a musical instrument with ancient roots that is used as one of the primary instruments in jazz, blues, country, flamenco, mariachi, rock music, and many forms of pop. It typically has six strings, however there are also guitars with four, seven, eight, ten, eleven, twelve, thirteen and eighteen strings.
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 continue to have a profound influence on popular culture.
