Notice that in these tuning systems, a third kind of whole tone, even wider than the major tone, exists. This 9:8 interval was named epogdoon (meaning 'one eighth in addition') by the Pythagoreans. The 9:8 major tone arises in the C major scale between C & D, F & G, and A & B. The 10:9 minor tone arises in the C major scale between D & E and G & A, and is "a sharper dissonance" than 9:8. The minor tone may be derived from the harmonic series as the interval between the ninth and tenth harmonics. The major tone may be derived from the harmonic series as the interval between the eighth and ninth harmonics. info), and it is an approximation thereof in other tuning systems, while the minor tone is the 10:9 ratio play ( help. The major tone is the 9:8 interval play ( help The difference in size between a major tone and a minor tone is equal to one syntonic comma (about 21.51 cents). In tuning systems using just intonation, such as 5-limit tuning, in which major seconds occur in two different sizes, the wider of them is called a major tone or greater tone, and the narrower a minor tone or, lesser tone. Here, middle C is followed by D, which is a tone 200 cents sharper than C, and then by both tones together. Listen to a major second in equal temperament ( help It occurs in both diatonic and pentatonic scales. It is common in many different musical systems, including Arabic music, Turkish music and music of the Balkans, among others. The major second was historically considered one of the most dissonant intervals of the diatonic scale, although much 20th-century music saw it reimagined as a consonance. Some equal temperaments, such as 15-ET and 22-ET, also distinguish between a greater and a lesser tone. Their size differs by exactly one syntonic comma (81:80, or about 21.5 cents). The largest (9:8) ones are called major tones or greater tones, the smallest (10:9) are called minor tones or lesser tones. In just intonation, major seconds can occur in at least two different frequency ratios: ĩ:8 (about 203.9 cents) and 10:9 (about 182.4 cents). Intervals composed of two semitones, such as the major second and the diminished third, are also called tones, whole tones, or whole steps. It is considered a melodic step, as opposed to larger intervals called skips. In moveable-do solfège, it is the interval between do and re. On a guitar string, it is the interval separated by two frets. On a musical keyboard, a major second is the interval between two keys separated by one key, counting white and black keys alike. The major second is the interval that occurs between the first and second degrees of a major scale, the tonic and the supertonic. The intervals from the tonic (keynote) in an upward direction to the second, to the third, to the sixth, and to the seventh scale degrees (of a major scale are called major. Diminished, minor and augmented seconds are notated on adjacent staff positions as well, but consist of a different number of semitones (zero, one, and three). For example, the interval from C to D is a major second, as the note D lies two semitones above C, and the two notes are notated on adjacent staff positions. A second is a musical interval encompassing two adjacent staff positions (see Interval number for more details). In Western music theory, a major second (sometimes also called whole tone or a whole step) is a second spanning two semitones ( Play ( help
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