the percussion section has the largest variety of instruments. such as: the tambourine, the triangle, the fabulous loud gong, the crashing cymbals and the ringing bell. the timpani (or "kettle drums") can be tuned to particular notes. they are the most common percussion instrument. composers such as haydn and mozart nearly always used them, even with their small orchestras. this is the most commonly used percussion instruments and is used in almost all pieces.