How do I hear the harmony progress?
Before we can formally practice, we also need to understand some basic common sense.
Harmony systems commonly found in modern music
1. Major harmony system
2. Minor harmony system
3. Blues harmony system
How to distinguish between harmony systems

1. Basic characteristics of major music
Most of the tunes in major music are bright, fresh and imposing;
The most commonly used major scale is the natural major, the scale composition is 1, 2, 3, 4, 5, 6, 7, 1, the size of the interval between each tone, in order of "full-full-half-full-full-full-half", which is the scale we are most exposed to and most familiar with;
Most of the chords in major are composed of first, fourth and fifth grades, of which the first and fourth chords are major chords (third, sixth, seventh) and the fifth is the third or seventh.
2. Basic characteristics of minor music
Most of the music in minor is delicate, gentle, dark and gloomy;
There are several common minor scales, in fact, each of which has its own independent harmonic system, but generally belongs to the minor system; among them, the most common in China is the natural minor, and its scale composition is 1, 2, b3, 4, 5, b6, b7, 1. Most of the chords in the natural minor are also composed of first, fourth and fifth grades, and these three chords are small chords (minor three, minor seven);
The minor key in European and American music refers more to the harmony minor, the melodic minor key, and the Doria minor;
In practice, in addition to the minor harmony in jazz, most of the minor music of popular and rock music in China is based on the major key when analyzing, that is, the minor harmony takes the six-level minor chord of the major key as the main chord, which please pay attention to the distinction.
3. Basic characteristics of blues music
Most of the blues music is more sad, grumpy, and crying, often with improvised singing or playing;
Blues music is usually twelve bars, the rhythm is mostly Shullfe rhythm, and the basic blues scales are 1, b3, 4, #4, 5, b7, 1. Most of the chords in blues music are also composed of first, fourth, and fifth degrees, and these three chords are usually seventh chords.
(Note that no matter what the harmony system, usually the most common occurrence is the first-level main chord)
How to listen to harmony
1. Usual basic preparation
a. Do basic ear training exercises such as listening and singing scales
b. Do basic rhythm exercises and sub-section sense exercises
c. Learn basic music theory and harmony knowledge
d. Practice playing chords on a guitar or keyboard
2. Practice listening to harmony specifically
a. Listen to chord properties
b. Use the instrument to find the pitch
In fact, hearing the harmony is a long-term accumulation process, we don't have to worry, according to the above basic method after a period of practice, you should be able to hear the harmony immediately.