In simplified musical notation, adding a horizontal line under a note means that the duration of the note is reduced by half, that is, the note is half a beat; adding a dot means extending the duration of the previous note by half. The horizontal line under the note is called the minus time line, which means that the time value of the note is reduced by half. The more subtractive time lines there are, the shorter the note is. Each additional subtractive time line means it is shortened to half the length of the original note.

The positions of the horizontal lines in the musical notation are different, and the durations of the marked notes are also different. The horizontal line under the note is called the minus time line, and the corresponding short horizontal line written on the right side of the basic note is called the time addition line, which means extending one beat. The more time lines there are, the longer the duration of the sound.

Extended information:

Generally speaking, there are four basic elements in the composition of all music, the most important of which are "the pitch of the sound" and "the length of the sound": < /p>

1. Pitch of sound: Any piece of music is composed of alternating high and low sounds. Looking directly at the piano, the keyboard sound to the left is lower, and the keyboard sound to the right is higher. As far as the numbered musical notation is concerned, there are a number of dots "˙" and ":" symbols directly above or below the numbers. The number of dots can be understood as intensity. The more the dots, the stronger they are. Above it represents treble, and below it represents bass. The principle is expressed as the vibration frequency of an object. The higher the pitch, the higher the vibration frequency, and vice versa.

2. The length of the sound: In addition to the pitch of the sound, another important factor is the length of the sound. The notation of the pitch and length of the sound determines which piece of music is different from other pieces of music, and therefore becomes the most important basic element that constitutes music. The principle is expressed in the duration of sound.