Music beat refers to the combination of strong beats and weak beats, specifically the total length of notes in each section of the score, the common ones are 2/4, 3/4, 4/4, 6/ 8 beats, the length of each measure is fixed. The tempo of a piece of music is fixed at the time of composition and will not change. A piece of music can be composed of a combination of several beats. 2/4 beat: 2/4 beat is a quarter note, with 2 beats per measure, and there can be two quarter notes. Strong, weak. 3/4 beat: 3/4 beat is a quarter note, with 3 beats per measure, and there can be three quarter notes. Strong, weak, weak. 4/4 time: 4/4 time is a quarter note as one beat, each measure has 4 beats, and there can be 4 quarter notes. Strong, weak, sub-strong, weak. 6/8 beat: 6/8 beat is an eighth note, with 6 beats per measure, and there can be 6 eighth notes. Strong, weak, weak; second strong, weak, weak. (Most of the 3/4 beats are in the waltz form. 2/4 beats are characterized by the alternation of strong and weak rhythms. When they are fast, they often express cheerful scenes. 4/4 beats are a combination of four and two beats and dilute the second heavy beat. The song is more lyrical) 1. Beat In music, time is divided into equal basic units, and each unit is called a "beat" or a beat. The duration of a beat is represented by the duration of the note. The duration of a beat can be a quarter note (that is, a quarter note is a beat), a half note (a half note is a beat), or an eighth note. diaeresis (eighth note as one beat). The duration of a beat is a relative concept of time. For example, when the prescribed speed of the music is 60 beats per minute, each beat takes up one second, and half a beat is one-half second; when the prescribed speed is 120 beats per minute, When, each beat is half a second, a half beat is a quarter of a second, and so on. After the basic duration of the beat is determined, the notes of various durations are linked to the beat. For example, when a quarter note is used as a beat, a whole note is equivalent to four beats, a half note is equivalent to two beats, an eighth note is equivalent to a half beat, and a sixteenth note is equivalent to a quarter beat; if If an eighth note is considered a beat, a whole note is equivalent to eight beats, a half note is equivalent to four beats, a quarter note is equivalent to two beats, and a sixteenth note is equivalent to half a beat. 2. Time signature The time signature is a fraction, written at the beginning of the music (the left end of the first line of the staff, following the clef. If there is a key signature, the order is clef → key signature → time signature). The denominator represents the basic duration of the beat, that is, how many quarter notes are used as one beat, and the numerator represents how many beats there are in each measure. For example: 2/4 means that one beat is a quarter note, and each measure has two beats; 3/4 means that one beat is a quarter note, and each measure has three beats; 3/8 means that one beat is an eighth note, and each measure is one beat. There are three beats in a measure. There are only three denominator parts of the time signature: 2, 4, and 8. That is to say, half notes, quarter notes, and eighth notes are used as the basic time values ??of the beat. The reason why time signatures are written as fractions is because whole notes are treated as integers and the basic unit for immediate value division in the staff. The mark of the whole note is C. Assume C is equal to 1. The duration of the half note is naturally 1/2. When there are two beats (two half notes) in a measure, its duration is 1/2 1/2, we get The time signature in fractional form is 2/2; when there are three beats (three half notes) in a measure, the time value is 1/2 1/2 1/2, and the time signature in fractional form is 3/2. In the same way, the duration of a quarter note is 1/4. When there are two beats (two quarter notes) in each measure, the time signature is written as 2/4, and when there are three beats (three quarter notes), it is written as 3/ 4, and so on. When writing the time signature on the staff, use three lines (i.e. the middle line) instead of the horizontal line indicating the score. There is no need to write it separately. If the tempo does not change in the middle of the music, just write it once at the beginning. If the tempo changes in the middle, you need to mark the new time signature. 3. Measures Music always alternates between strong beats and weak beats. This alternation cannot be chaotic or arbitrarily arranged. Instead, a section is organized into a minimum beat according to certain rules, and then the cycle repeats on this basis.

For example, when there is only one weak beat between two strong beats, it is called "two beats", which is the type of 2/4 beat; when there are two weak beats between two strong beats, it is called "triple beat", Like 3/4 and 3/8; there are three weak beats between the two strong beats, which are called "four beats", and the most common one is 4/4. Two sections are separated by a "bar line". The bar line is a thin line perpendicular to the staff, with five lines on top and one line on the bottom, which just cuts off the staff. No matter how far away the upper and lower lines are from the staff, the bar line cannot go beyond the staff. Draw two bar lines in the last section of the work, and the one on the right is thicker, indicating the end of a work or a paragraph. The beat after the bar line must be a strong beat, and there is only one strong beat in each bar, and the rest are weak beats. 4. Single beat and compound beat. As mentioned above, there is only one strong beat in each measure, which is called "single beat". All double and triple beats fall into this category, such as 2/2 (strong-weak), 2/4 (strong-weak), 3/4 (strong-weak-weak), 3/8 (strong-weak) - weak) etc. If a measure contains more than two single beats of the same type and has more than two stresses, it is called a "compound beat" or "complex beat." At this time, the beat after the bar line is of course the accent and is still called a strong beat. The second accent position is slightly weaker in intensity and is called a "sub-strong beat". The most common compound beat is 4/4 (2/4 2/4), whose rhythm is strong-weak-then strong-weak; others such as 6/8 (3/8 3/8) are strong-weak- Weak - second strong - weak - weak, 6/4 (3/4 3/4) is also strong - weak - weak - second strong - weak - weak. There are also nine beats and twelve beats in compound time. It is worth noting that, except for four beats (such as 4/4), the accent positions of compound time are based on three beats, that is, every two weak beats appear. A downbeat.