Details: This poster shows a guitar and amp. In the middle it says Plug In¿ Tune Up¿ Rock Out .
The guitar is a musical instrument with ancient roots that is used in a wide variety of musical styles. Guitars are recognized as one of the primary instruments in blues, country, flamenco, rock music, and many forms of pop. 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.