The ancient Greeks developed a system of musical scales based on mathematical ratios, which laid the foundation for Western music theory.

The Pythagorean scale was a mathematical scale based on the ratios of perfect fifths and perfect fourths, and it was widely used in ancient Greek music.

The pentatonic scale is a scale that consists of five tones per octave, and it is commonly found in traditional music from many cultures around the world.

The major scale is a diatonic scale that consists of seven tones per octave, and it is the most commonly used scale in Western classical music.

The chromatic scale is a scale that consists of twelve tones per octave, and it is characterized by the use of half steps between all adjacent notes.

The blues scale is a pentatonic scale that is commonly used in jazz and blues music, and it is characterized by the use of blue notes, which are notes that are slightly flatted or sharpened.

The hexatonic scale is a scale that consists of six tones per octave, and it is commonly found in traditional music from many cultures around the world.

The raga scale is a melodic framework that is commonly used in Indian classical music, and it is characterized by the use of specific notes and melodic patterns.

The whole tone scale is a scale that consists of six tones per octave, and it is characterized by the use of whole steps between all adjacent notes.

The gongche scale is a pentatonic scale that is commonly used in traditional Chinese music, and it is characterized by the use of specific notes and melodic patterns.

The tetrachord scale is a scale that consists of four tones per octave, and it is commonly found in traditional music from many cultures around the world.

The yo scale is a pentatonic scale that is commonly used in traditional Japanese music, and it is characterized by the use of specific notes and melodic patterns.

The tritone scale is a scale that consists of three tones per octave, and it is characterized by the use of the tritone interval, which is an interval that spans three whole tones.

The pentatonic scale is commonly used in traditional African music, and it is characterized by the use of five tones per octave.

The ditone scale is a scale that consists of two tones per octave, and it is characterized by the use of the ditone interval, which is an interval that spans two whole tones.