The commonly used rhythm patterns in music are as follows:

1. Quarter rhythm:

A quarter note equals one beat, and two eighth notes equal one beat. Beat, four sixteenth notes equal one beat.

2. Eighth note rhythm:

One eighth note is equal to half a beat, and four sixteenth notes are equal to one beat.

3. Sixteenth note rhythm:

One sixteenth note equals a quarter beat, and eight thirty-second notes equal one beat.

4. Rhythm of first eight and then sixteenth:

The first eighth note is equal to half a beat, and the last two sixteenth notes are equal to one beat.

5. Rhythm of first sixteen and last eight:

The first two sixteenth notes are equal to one beat, and the last eighth note is equal to half a beat.

6. Syncopated rhythm:

A syncopated note divides a beat into two parts. The first part is weaker than the normal beat, and the second part is stronger than the normal beat.

7. Triplet rhythm:

Divide a beat into three notes of equal length.

8. Dotted rhythm:

A dotted note extends the duration of the note before it.

9. Legato rhythm:

Connect two or more notes together to form a continuous melody line.

Introduction to syncopation and dotted rhythm patterns:

1. Syncopated rhythm

Syncopated rhythm refers to staggering two notes in a beat , forming a form with notes in front and notes in back.

The characteristic of this rhythm pattern is that the first note is longer than the original beat, while the second note is shorter than the original beat, thus breaking the original strength and weakness law and forming A unique sense of rhythm. Syncopated rhythm is often used to emphasize a certain note, highlight a certain emotion or express a certain effect.

2. Dotted

A dotted dot is a small dot added behind the note, which means that the duration of the previous note is extended by half. If a note is followed by a dot, the note's duration is increased. Dots can be used to emphasize a certain note, highlight a certain emotion or express a certain effect.

Dots can also be used in conjunction with other rhythm techniques, such as syncopated rhythm, legato, etc., to create a richer and more diverse rhythmic feel.

In general, segmentation and dotted points are intended to break the original rhythm rules and create a more diverse sense of rhythm, thereby enhancing the dynamics and expressiveness of the music.