For hundreds of years, its predecessors, the Persian lutes, were used in the Mogul courts. It is stated by the Sangeet Sudarshana that the sitar was invented by Amir Khusru in the 1700 s. The Persian setar was his basis for naming this instrument. There are a lot of theories about the origin of the sitar. Together with the flute, oboe, English horn, clarinet, and contrabassoon, it covers the role of the bass and tenor instrument of the orchestra. Bassoon history The 16th century ancestor of the bassoon was given many names: fagot for the French, dulcian for the Germans, bajon for the Spanish, curtal for the English, and fagotto for the Italians. The reed plate is the collective name for reeds in one panel. Reeds could be made of steel, brass, plastic, or aluminum. Windsavers are valves used in instances wherein two reeds are in the same cell and there is frequent unnecessary air passage through the non-playing reed. The cover plate protects the reed-plates. The term harpsichord could mean any member of the harpsichord family but it particularly denotes an instrument that has the same shape as a grand piano with a triangular case. At the right, it has short treble strings while at the left are long bass strings. It is longer than the modern piano and has a sharper curve. Then the length of timber will be checked or tested for any cracks or holes. Both ends of the wooden tube will be covered by hands and kept under water for a few minutes. If bubbles appear, it means that there are holes and these should be sealed with beeswax. For the didgeridoo to have the correct pitch, the stick will be shortened to approximately 1 to 3 meters. In 1764, it spread to England and was increasingly acknowledged. Bugles in the 19th century Modifications on the standard bugle in the 19th century included valved bugles and keyed bugles. It was in England in the early 1800 s that the keyed bugles were invented with the copyright for the Royal Kent bugle by Joseph Halliday.