Canonical imitation is a music composition technique in which one part imitates the same melody at the same or slightly later time than another part in a musical work. This technique can create a unique musical effect that makes the musical composition richer and more interesting.

1. There are many variations of canon-style imitation. Strict canon: In this form of canon, the voice imitated is exactly the same as the voice being imitated, that is, every note and time value are the same. Exactly the same. This form is the easiest to hear the feeling of canon.

2. Free canon: In this form of canon, the imitated voice is not completely consistent with the imitated voice, and there can be a certain degree of change and freedom. This form is more improvisational and flexible. Retrograde canon: Retrograde canon means that the melody of the imitating part is opposite to the melody of the imitated part. For example, the imitated part is ascending and the imitating part is descending.

3. Reflection Canon: Reflection Canon means that the melody of the imitating part is mirror-symmetrical to the melody of the imitated part. For example, the imitated part is ascending and the imitating part is descending.

4. Expanding or reducing canon: Expanding or reducing canon means that there is a certain time or space difference between the imitating voice and the imitated voice, for example, the imitated voice is slower or faster , or the imitating part has more or fewer notes than the imitated part.

The importance of canon-style imitation

1. Canon-style imitation can create a unique musical effect, making the music work richer and more interesting. By imitating other parts, new parts are created. This technique makes the melodies in the musical work more diverse and avoids monotony and boring situations.

2. Canon-style imitation can enhance the structural sense of musical works. In Canon-style imitation, each voice is imitated according to certain rules, which gives the musical work a better sense of integrity and structure. At the same time, Canon-style imitation can also bring a certain layering and depth to musical works.

3. Canon-style imitation can also show the dynamics and tension of music. In canon-style imitation, each voice appears after a certain time interval. This change in time interval can express the dynamics and tension of the music. At the same time, canon-style imitation can also express the rhythm and rhythm of music.

4. Canon imitation is a very expressive musical technique. Through canon-style imitation, composers can express their own musical thoughts and emotions, while also allowing listeners to feel the beauty and charm of music. Therefore, canon-like imitation is an indispensable technique in music creation.