The trumpet produces many different sounds. they range from a piercing call to battle to a soft, romantic melody. throughout history, trumpets have signaled the arrival of royalty, opened celebrations, and announced the time of day. the military has used trumpet calls as a part of its daily routine. the stirring "reveille" plays in the morning, while the soulful sound of "taps" ends the day. the different tones of the trumpet can express the full range of human emotion. in an orchestra, the trumpet may start out supporting the basic harmonies and end with a soft, flowing melody. in a jazz ensemble, the trumpet section will provide the excitement of an up-beat piece only to follow with a soft ballad. changes in tone are also made by inserting mutes into the bell of the instrument.