In music score, the function of bar lines is to divide the beat units. Details are as follows:

1, beat definition: beat is the basis of time division in music and the basic unit of music rhythm. In music, beats are usually represented by "beats", and each beat has its own specific duration. Different musical styles and speeds will have different beat units, such as quarter notes, eighth notes and sixteenth notes.

2. Beat symbol: Beat symbol is a symbol used to express the beat unit. Common beat symbols include whole notes, half notes, quarter notes, eighth notes and sixteenth notes. These symbols mean the duration of a note in music. For example, a whole note equals two and a half notes, a half note equals two quarter notes, and so on.

3. Pat machine: Pat machine is a mechanical device used to help musicians master the rhythm of music. The racquet machine can adjust the speed and beat to adapt to different music styles and speeds. In the music score, the speed and beat of the racket are usually marked to help the player master the rhythm better.

4. Cultivation of sense of rhythm: It is very important for music learners to master the rhythm. In practice, you can cultivate a sense of rhythm by using metronome, and gradually improve your sensitivity and mastery of rhythm. At the same time, you can also cultivate your sense of rhythm by listening to music and playing drums.

Music score related knowledge

1. Types of music scores: There are many kinds of music scores, which can be divided into classical music scores, pop music scores, rock music scores and jazz music scores according to different musical forms and styles. At the same time, according to the different music carriers, it can also be divided into paper music, digital music and tape music.

2. Basic elements of music score: The basic elements of music score include notes, rhythm, melody, harmony and so on. Notes are the basic unit of music score, indicating the height and length of music; Rhythm refers to the beat and intensity of music; Tone refers to the mode and tonality of music; Harmony represents chords and voices in music.

3. Reading method of music score: Reading music score requires mastering certain music theory and solfeggio skills. Beginners can learn the basic knowledge of music theory such as notes, rhythms and tunes to understand the music score. At the same time, solfeggio training can improve the sensitivity to pitch and rhythm and help to read music better.

4. The role of music score in music education: Music score plays an important role in music education. By studying music scores, students can master basic music theories and skills and improve their ability to understand and express music. At the same time, reading music scores can also cultivate students' solfeggio and ear training ability and music appreciation ability.