1. Interval. Interval refers to the relationship between two sound levels in terms of pitch, that is, the distance between two sounds in pitch. Its unit name is called degree.

The pitch relationship between two musical tones. Expressed in "degree". Taking simple musical notation as an example, from 1 to 1 or from 2 to 2 is a degree, from 1 to 3 or 2 to 4 is a third, and from 1 to 5 is a fifth.

First of all, degree is a unit used to measure the auditory distance between sounds. It is a measure whose size is artificially determined.

Explain what octave is. This is actually a difficult question to answer, because the relationship between intervals of other widths is based on the octave, relative to the octave. To explain it thoroughly, we need to start with the laws.

2. Scale

Change the notes in the mode from starting with the tonic to ending with the tonic, from low to high (called ascending), or from high to low (called descending) Arranged in a ladder shape, it is called a musical scale.

Scale is a form of mode. Its full name is mode scale. A scale must be a mode, but a mode is not necessarily a scale.

To put it bluntly: the mode is the melody we hear when listening to a song. A scale is also a melody, it is just a type of melody.

Extended information

1. Natural heptatonic scale

It is the most widely used heptatonic scale. Its interval organization is that within each octave there are The 5 whole tones are divided into two strings and three strings, with a semitone separating the two strings.

2. Pentatonic scale

Detailed name is "pentatonic scale without semitones" or "whole-tone pentatonic scale".

Widely popular in Asia, Africa, some islands in the Central Pacific, Hungary, Scottish folk music, and among native American tribes before Europeans arrived in the Americas. Often called the "Chinese scale".

The five levels have special names in traditional Chinese culture, namely: Gong, Shang, Jiao, Zheng, and Yu. Its interval organization is that there are three whole tones in each octave, divided into two strings (Gong-Shang-Jiao) and a separate one (Zheng-Yu). The two sections are separated by a □ sound, see the example below. 2: Each note in the scale can be used as a tonic to establish a mode, which can form 5 different pentatonic modes.

On the basis of the pentatonic scale, different additional tones (partial tones) can be inserted into each interval of the □ sound to form a heptatonic scale (a heptatonic scale with the pentatonic tone as the main tone). The additional tones can be inserted in 3 different ways to form 3 different scale forms (see Gong Diao). The pitch of the additional sound can often wander, and the wandering pitch sometimes divides the interval of the □ sound into two intervals of about three-quarters of a tone each.

Reference material? Baidu Encyclopedia—Music Scale

Reference material? Baidu Encyclopedia—Music Interval