Many people have long known instruments, consisting of a hollow vessel, the opening of which is covered with skin. Such instruments are found in India, in Africa, in China, among the Slavic peoples. Originated from them modern timpani, occupying a place of honor among the percussion instruments of the Symphony orchestra. Timpani appeared in the orchestra from the first shock, in the XVII century. This large copper boilers, the top of which tightened skin. Using screws to tighten the skin can be changed, and then the sound becomes higher or lower.
Play tympani sticks, mixed with a felt. Each kettledrum may make only one sound, the one on which it was configured. Rebuild kettledrum long and difficult. Therefore, in the orchestra, sometimes two or three timpani different sizes with different settings. Modern composers use four, sometimes even five kettledrums. Sonority timpani can be very diverse: from imitation of the thunder to a quiet, barely perceptible noise or hum. Separate blows timpani support low, bass voice of the orchestra. And sometimes Litavrin charge even melodies, of course, is simple, consisting of three or four sounds.