This makes it suitable for chant and song accompaniment. It is also said that it is the sound of Australia, the voice of the earth, and probably the world s most ancient musical instrument. The term didgeridoo is thought to be a word formed from Western invention. It is also considered to be from the Irish d daire or d idire which means trumpeter, long-necked person, or constant smoker and from dubh or duth meaning black or native respectively. The strings all have the same length so variation in pitch is either accomplished by different sting thickness or by different sting tensions. The strings are made of gut. Gut is a cord made from the natural fiber in the animal intestines walls. The string with the deepest note is placed farthest away from the player. Unfortunately, most of which are historically inaccurate and, thus, impossible. The most common theory is that Amir Khusru invented the sitar around 1300 AD. This is a different Amir Khusru from the one stated above. The Amir Khusru of the 1300 AD was a popular personality and is an image for the Hindustani Sangeet. This stops the shell and hoop from vibrating properly and controls the natural sound of the snare drum. Variations in construction In choosing snare drum, you should consider which musical genre you would like to play so that you would match this with the right construction. The material of the snare drum has a huge effect on sound production. Aside from those, the trombone is also played in smaller musical ensembles such as brass quartets or trios and trombone quartets or choirs. These instruments are also commonly used for different music genres such as salsa, rock, swing, and jazz. The trombone in the 20th century In the fist half of the 20th century, the trombone remained popular and widely used in the orchestra through works of various prominent artists like Leonard Bernstein, William Walton, and Richard Strauss. Its pitch is a fourth higher than the contrabass tuba. The F tuba is the standard instrument of the orchestras in most of Europe. It is usually played by professionals in solo and to play in higher positions in the classical ensemble. On the other hand, the E flat tuba produces sound that is an octave higher than the contrabass tubas and is the customary orchestral tuba in the United Kingdom.