What is the formula of chord arrangement?

1, determine the mode of the song. Major starts with one of the notes 1, 3 and 5, ends with 1 or 5, and minor starts with 3 or 6 and ends with 6. Major songs are mainly accompanied by major chords; Minor songs are dominated by minor chords.

2. The beginning and end of the song should match the main chord. C in major and Am in minor.

3. Before termination, a bar belongs to the seventh chord or the dominant chord. G7 or G in major and E7 or Em in minor.

4. Dependent chords should be matched before the seventh chord. C → F → G7 → C .

5, and then add chords to each bar. The sound in the bar is obviously biased towards a chord, so it is matched with that chord.

6. If the inclination of the notes in the bar is not obvious to any chord, the notes on the remake or the notes with longer duration shall prevail.

7. Consider whether the chord progression is reasonable. The third, fourth, fifth and sixth degrees are well connected, and the second and seventh degrees are not well connected.

8. Beautify harmony with proxy chords.

Extended data

Generally speaking, the beginning and end should be matched with the main chord, because the main chord is the most stable and can play a clear role in the beginning and end. For example, C major should be matched with C chord, and A minor should be matched with Am chord. Then look at the beginning and end of each phrase.

A phrase can be a complete lyric or a short emotion, which can be regarded as a complete song, so it should be clearly expressed at the beginning and end.

However, because it is only a part of the whole song, this expression is slightly weaker than the beginning and end of the whole song, so it can be matched with some semi-terminated chords: chords, and of course it can also be matched with main chords. So the basic skeleton of the song is set up.