A few modern manufacturers are the British Peter Bavington, Swiss Thomas Steiner, American Charles Wolff, and Belgian Joris Potvlieghe. Playing the clavichord A key is pushed down to play a clavichord s note. Pressing one end causes the other end which is inside to come up. This end has a tangent, a metallic thin blade, which strikes the respective string. One of the most significant advancements in its key work was that both tone holes can be controlled by the left thumb using one octave key. This is now common to all modern sax. A closer look Learning to play the sax requires to things: knowing how to control the reed and how to properly and smoothly finger the instrument. The air flow could be maintained in the chanter and drone pipes through using the left hand to squeeze the bag during breathing periods. In the mouthpiece, there is a circular piece of leather attached to the bag that operates like a one way valve. The flap closes when the player stops blowing air flow and opens when blowing is ongoing. However, this theory has no historical basis because there was no evidence of the existence of the sitar before the fall of the Moghul Empire. Another theory is that the ancient veenas like the rudra vina were the parents of the sitar. The rudra vina is clearly a stick zither which is in contrast with the sitar which is a lute. The literature about Italian musicians who journeyed all over Europe was the source of the very first proof of the steel-string mandolins. An example of a mandolin built in these early times was the mandolin by Giuseppe Vinaccia which is preserved in London, England. Geatano Vinaccia built the very first known mandolin in 1744. It produces a resonant low sound with complicated rhythmic pattern. 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.