The guitarrón is a large, acoustic string instrument commonly used in traditional Mexican music, particularly in mariachi ensembles. It has a deep body and a short neck, typically featuring six strings that are played with a pick. The guitarrón provides a rich, resonant bass sound that supports the melody and harmonies of the group. Originating in the 19th century, the guitarrón is often made from wood and can be decorated with intricate designs. It plays a crucial role in the rhythm and foundation of mariachi music, complementing other instruments like the violin and trumpet.