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20 th CENTURY EXPERIMENTAL MUSIC AND MATHEMATICS From the beginning of the history of humanity the relations between music and mathematics had been always perplexing and puzzling for the people. The music described as the art form and the amalgam of harmony, destiny, rhythm and melody. The people used it for having rest and make their life more peaceful. Furthermore, in ancient world the relation between music and mathematics has been attracted to the attention, because since the beginning of humanity mathematics used for finding patterns and make complex society in their countries. Like every branch of science mathematics used for finding the logic behind all the subjects. The musicians comprised thee sounds that we hear are combination of a pattern with logic behind them. In early 6 th century, the beauty of music and mathematics became more striking with the discoveries of Pythagoras Equal Tempered Scale. As every mathematician who is well- known with their successes in mathematical discoveries however, many mathematicians are known with their musical studies. Additionally, like Ludwig von Beethoven many musicians used the mathematical patterns and functions in order to make musical compositions. Ludwig von Beethoven used the relations between the mathematics and music in geometrical way in order to convey the emotions in a certain way. In one of his most popular composition which is “Moonlight Sonata” he has uses mathematical patterns by creating Geometrical sense in the musical pieces. He explained mathematics as the music of the reason. The mathematicians for instance Pythagoras used the ratios between an octave and he created a chart by that way Pythagorean Equal Tempered Scale used for proving of mathematic behind the music. In Pythagorean group the students are divided into groups which are called as inner and outer cycles. The inner group includes the “Mathematikoi” in this group the people believes the importance of music and they all studied for mathematics and the other science subjects. They think that music makes their life more enjoyable and help them to sleep easily. Furthermore, Pythagoras continued to develop his studies about music and found the ratios between an octave. He examined ratios between two octaves as 1:1, 2:1, 3:2 and 4:3. As musicians described the sound as the sound produced by the instruments are the basic sounds and they are accompanied with different overtones. By the original fundamentals of the overtones their frequencies differ.. Between the notes of A and D he found the value of 2:1 which is one of the octave values. According to ratios between the notes B to C he get the value of 12:9 and 4:3 and which made equivalent, so that he called this ratios as perfect fourth and perfect fifth. Thus, they produce consonance and dissonance. He noticed that all the values are related with the length of the strings. In 20th century the people shows the ratios with guitar. Nowadays many musicians use the chromatic scale which is a scale that divides the octaves into semitones in order to make a pattern by dividing the tones into 12 semitones. Additionally, the composers began to use “12 tone matrix” which is a technique first used by Amold Schoenberg who created musical compositions which involved chromatic scale. In method of creating 12 tone matrix using 12 x 12 grid square and by creating a diagonal with “0” from right to left or left to right. By giving numbers to notes and converting the tables into notes and obtain the numbers which are smaller than 12 for each square. They have played it in guitar and it called as 12 tone music since the beginning of 20th century. The fundamental idea of 12 tone music consists of serialism which is a method of composition in which the musicians used to control various types of music elements by providing harmony and melody. The main idea of 12 tone music is repeating the same serial order over and over. Nowadays many popular musicians use 12 tone music in their musical compositions The logic behind all the discoveries and relations between music and mathematics consist of having a pattern. Thus, the musicians can create a pattern by using the same technique with 12 tone music an create a grid square. By giving numbers to each 8 tone they may have numbers with their formula of patterns. By dividing them into 8 and calculating the remainder of them like 12 tone matrix method they will get numbers which are less than 8. By converting them into the notes that are given from the beginning they may play them in different instruments with different rhythms. Bibliography: Shah, S. (2010). An Exploration Of The Relationship Between Mathematics and Music. Manchester: University of Manchester . serialism. (2016). In Encyclopædia Britannica. Retrieved from http:// www.britannica.com/art/serialism How to make a 12-tone matrix,2011(video file),Availabe from: [11 February 2016] Yaren YENİAY 10-B MATHEMATICS DEPARTMENT THE CLAPPER 2015 - 2016 37