Musical instrumentsA fairly old instrument still used today is the theremin. It has a distinctive design that is different from any other instrument and is played much more differently than other instruments in circulation today. The theremin is an electronic musical instrument played using electric fields. When it was introduced, society was shocked to see this instrument that could be played without even touching it. The theremin is tuned to have a range of three and a half octaves. The operation of the theremin is based on the theory of beat frequencies. The instrument also has a special look. Two antennae protrude from each side of the theremin. A vertical antenna is also located on the right which controls the pitch. The closer the player's hand is, the higher the pitch. The further away the player's hand is, the lower the pitch. A horizontal loop antenna is located on the left and controls the volume. The closer the hand is, the louder the volume. The theremin was patented in 1928 by Léon Theremin. The theremin has not escaped its original status as a novelty instrument. Most people have heard of the theremin, even if they don't recognize it. The theremin is frequently featured in science fiction films, especially classic films. He's not as famous today, but he has appeared in recent films such as Mars Attacks and Ed Wood. (History of the theremin, Moog)The theremin was invented in 1921 by Léon Theremin. It is one of the most important musical instruments of the 20th century because it is the first electronic instrument. Leon Theremin first came up with the idea for the theremin while he was in high school. He noticed that depending on how close a person is to a Tesla coil...... middle of paper ......or classical guitar, Ud strings are generally lighter to play. The old ud had four courses for systems adjustment. The second feature is the pegboard. To provide the tension needed to keep the pegs from slipping, the oud's peg box is bent at an angle ranging from forty-five to ninety degrees. The actual body of the ud resembles a watermelon: it has a bowl-shaped back which differs greatly from the flat-back guitar. The bowl shape of the ud allows the ud to resonate and have a much more complex sound. The fourth and final characteristic of the oud is the sound holes. The number of holes varies between one and three holes. The holes can be circular or oval and are decorated. The decorations are usually a rosette carved from bone or wood. The four defining characteristics help the ud deliver the sound and pleasure it creates..