The slurred notes in the staff are mainly used to connect several notes, indicating that they are sung with one syllable or played without interruption (such as using one bow to play legato). A form of polyphony indicating the singing of a group of notes or tones with one syllable. The line can become an arc but it also needs certain rules.
For example, the composer wants the duration of a note to be equal to a quarter note plus a sixteenth note. This must be done using a slur, which is done by drawing an arc over the two notes. There is also a type used for portamento, which means that the portamento between two notes is round, shiny, and has a smooth transition.
Extended information:
Leggato legato
It is marked with connecting lines, indicating that the notes of different pitches in the connecting lines are to be played ( Sing) must be coherent. The connecting lines of the legato method are mostly recorded on the top of the staff, and rarely on the bottom.
staccato
There are three types, which are marked with dots (·), triangles (▼) and dots plus arcs, indicating that certain notes or chords need to be broken. Play continuously. In monophonic music, staccato marks are usually recorded on the note head side. When two voices are recorded on a line of staff and do not use the same stem, they are recorded in opposite directions.
There are two types of sustained sound marks: one is represented by a short horizontal line, and the other is represented by a short horizontal line plus a dot. The former indicates that the sound is slightly stronger. Play and fully maintain the duration of the note. The latter means that the note is played slightly forcibly and the notes are slightly separated.
Sustained sound marks are the same as staccato marks. In single-part music, they are usually recorded on the note head side. In multi-part music, they can also be recorded in the opposite direction.
Glissanti notation
In the performance and singing of folk music, the way of playing glissando is very distinctive, and its symbols are usually marked with curves or arrows. A curve or arrow sloping upwards to the right means swiping up, and a curve or arrow sloping downwards to the right means swiping down.
Arpeggio playing method
Playing the notes in a chord quickly from bottom to top is called arpeggio playing method. It is marked by placing a vertical curve in front of the chord, sometimes also Mark with minor notes.
Dotted
The small dot on the right side of the note is a symbol that increases the duration of the note. A note with one dot increases the duration by one-half of the original note; a note with two dots increases the duration by three-quarters of the original note. Dots also apply to rests.
If the note head of a dotted note is within the space of the staff, the dotted note will be written next to the note head. If it is on a line, the dotted note will be written above or below the line.
Tie-lines
When used on two or more notes of the same pitch, it means that they are to be sung into one note, and its length is equal to the sum of these notes. . In monophonic music, slurs are always written in the opposite direction to the stems.
If there are two voices recorded on a line of staff, the line connecting the high voice part will bend upward, and the line connecting the low voice part will bend downward. If there are more than two voices, the connecting lines are written on both sides.
Tennus
Its symbol is a dot in the middle of a semicircle. In monophonic music, it is written above the notes and rests, indicating the style of the work. The player's intention can freely increase the duration of notes or rests. In polyphonic music the truncatula can also be written below a note or rest.
Tennis can also be recorded on the bar line to indicate a moment of rest between bars. A truncatula marked on a double vertical line indicates the end or end of a piece of music.
Baidu Encyclopedia - Staff