It is frequently open-ended which gives the player no easy way to end the pipe s sound. This gives bagpipes no rests or the legato sound. Bagpipes mostly consist of one or more drones. It is a cylinder-shaped tube with usually a single reed. It has at least two parts and has a sliding joint or bridle which manipulates the pitch. It is also said to represent the Apollonian virtues which are equilibrium and moderation. Structure The lyre has a hollow body called sound-chest, resonator, or soundbox. From this, two curved arms are projected upwards and are attached at the top by a yoke or crossbar. The body has another crossbar which transfers the strings vibrations. The name of clavichord derives from the Latin clavis which mean key and chorda which means string of a musical instrument. History In the early fourteenth century, the clavichord was believed to be invented. It was well-known in the 16th to the 18th century and was most popular in Scandinavia, the Iberian Peninsula, and other lands which use the German language. As time has passed, many keyboard and buttonboard systems were developed. Now, accordions have the ability to switch with ease between two voices and are constructed in various methods to increase durability and stability. Construction The accordion has three universal components body, pallet, and bellows and many other parts that are variable. The Clarinet is usually wooden and vertically played. It has a wider bore which has a single reed and this, when activated, vibrates against a removable mouthpiece. Traditionally, the wood used is granadilla wood from South America, Africa, or Asia. Nowadays, it is most common as a B-flat clarinet which is about sixty centimeters in length. In the 1980 s, the headless bass wad developed by Ned Steinberger and the Guild Guitar Corporation introduced the use of silicone rubber strings. Recently, bass guitar producers added digital modeling circuits in the instrument. Classic bass guitars Electric bass guitars has lasted for over 70 years and counting.