Untuned percussion refers to musical instruments that do not produce a definite pitch when struck. Examples include drums, cymbals, and tambourines. These instruments create rhythm and texture in music rather than melody, making them essential for various musical styles. In contrast to tuned percussion instruments like xylophones or marimbas, which can play specific notes, untuned percussion focuses on sound effects and beats. They are commonly used in orchestras, bands, and various cultural music traditions, contributing to the overall dynamics and energy of a performance.