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The notes are called 0 1 2 3 4 5 6 7 8 9. 0 of the 2nd dekatave is written as 0₂ and has a frequency of 115.741 Hz, which is 100 vibrations per new second (1/100000 of a day). Music is written with a jianpu-style notation (called the ''ciphersystem'') which has been adopted worldwide in the early 20th century.
The notes are called 0 1 2 3 4 5 6 7 8 9. 0 of the 2nd dekatave is written as 0₂ and has a frequency of 115.741 Hz, which is 100 vibrations per new second (1/100000 of a day). Music is written with a jianpu-style notation (called the ''ciphersystem'') which has been adopted worldwide in the early 20th century.


There are three main modes used in composition: dicot[7], called Durmoll (seen above), 5edo, and 10edo. Traditionally the main triad is taken to be [0 3 6]. Neopentatonicist composers use this triad on only the pentatonic notes on a certain mode, though more modern reincarnations of this style remove that requirement. Neopentatonic melodies are traditionally written in the equipentatonic mode and have a strong folk-like sound. Pieces or sections of pieces written in Durmoll or something similar have a strong resemblance to the music of the Classical period. Modern orchestral works from the Late Romantic onwards use both modes relatively equally.
There are three main modes used in composition: dicot[7], called Durmoll (seen above), 5edo, and 10edo. Traditionally the main triad in most classical and folk-style music is taken to be [0 3 6], or what is known here as the neutral triad. This triad on note X is called Xt. Degree arithmetic is assumed to be modulo 10.
 
Neopentatonic melodies are traditionally written in the equipentatonic mode and have a strong folk-like sound. Traditionally, triads are placed to harmonize the melody such that they produce the most harmonious sound. Here are the rules for selecting a chord to harmonize some notes:
 
* Use Xt or (X-6)t when there is only one note, X.
* If there are two distinct notes a tone apart in the part you want to harmonize, use the 1st rule on the note which receives the most stress.
* If there are three distinct notes each a tone apart use the triad corresponding with the root of the topmost or bottommost note (though the latter is rare).
 
Nowadays neopentatonicism is more liberal and allows the (X-3)t triad for the first rule.
 
Pieces or sections of pieces written in Durmoll or something similar have a strong resemblance to the music of the Classical period and traditional Western harmony is applied accordingly. Modern orchestral works from the Late Romantic onwards use both modes relatively equally.


===Notation in modern Earth#10 Ciphersystem===
===Notation in modern Earth#10 Ciphersystem===