What are the requirements and precautions for accompaniment of new songs, specifically as follows:

1. Analyze the mode. Familiar with the melody, analyze the mode, and determine the positive triad.

2. Match the chords. According to the melody, match all the regular triads that fit the melody tone.

3. Choose chords. Among the arranged chords, select the best chord for accompaniment.

4. Arrange the chord tones. That is the arrangement of chord tones. According to the order in which each chord appears, use the retention method and the separation method to rearrange the chord tones.

5. Choose accompaniment patterns. Determine the accompaniment pattern according to the genre of the song (music).

Chorus accompaniment forms:

Chorus is divided into two categories: a cappella chorus and accompaniment chorus.

There are two main accompaniment forms for chorus with accompaniment:

The first is keyboard accompaniment, which mainly includes piano accompaniment and accordion accompaniment, among which the piano accompaniment form is the most commonly used. Generally speaking, piano accompaniment is used in general professional choir competitions and special choral concerts.

The second is band accompaniment, which mainly includes Western orchestra, Chinese orchestra and symphonic wind band accompaniment. The most commonly used form is symphony orchestra accompaniment. Depending on the specific conditions of each team, Chinese and Western accompaniment are also used. Mixed bands or mixed bands with added electronic instruments are examples of choral accompaniment.

The placement of chorus accompaniment instruments or bands:

When using piano accompaniment, it is generally customary to place the piano in the right front of the chorus, that is, the conductor's left front is between the chorus In an appropriate position between the chorus and the conductor; when using band accompaniment, depending on the orchestra's formation or size, it may be placed directly in front of the chorus, that is, in the middle position between the conductor and the chorus, or it may be placed on the left side of the chorus. The front, that is, the right front of the conductor is in the appropriate position between the chorus and the conductor. Generally, large bands (according to the former) are placed in the middle, and small bands (according to the latter) are placed on the sides.