Four-two beat is a relatively common musical rhythm, with quarter notes as one beat and each measure having four beats.

The total length of the notes in each section of the score. Common music beats are 1/4, 2/4, 3/4, 4/4, 3/8, 6/8, 7/8, 9 /8, 12/8 beats, etc., 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.

Extended information

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, followed by After 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 there are two beats in each measure; 3/4 means that one beat is a quarter note, and there are three beats in each measure; 3/8 means that there are eight beats in each measure. A diaeresis is one beat, and each measure has three beats. 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.