1, triplet. A triplet is one beat, two beats or four beats divided into three parts, and each tone sings (plays) 1/3 beat, 2/3 beat or 4/3 beat. It can also be understood as the length of two notes sung (played) by three notes, for example, the length of two quarter notes sung (played) by three quarter notes in a quarter beat is two beats. This is a typical rhythm change. When the music is playing, the sudden triplet will give people a feeling of "dislocation" and instability. The score is represented by a sign with a "3" in the middle of the Legato.
2. Great segmentation. The syncopation rhythm is the rhythm change that occurs when the melody is in progress and the regular rhythm law is changed due to the need of music, and the strong beat and weak beat of notes are changed and emphasized. There are three notes A, B and C, and their order is ABC. At this time, A+C=B, and AC is divided by B. This is just a special form of segmentation among many forms. One note can also be divided by multiple notes, such as: 1/8, 1/4, 1/4, 1/8; 1/2, 1, 1, 1, 1/2, etc.
Combine a disorderly beat stream into different patterns, integrate different parts that are often repeated with different lengths, and carry out the middle scale, the length and strength of notes or syllables in the music melody. The rhythm of music is often compared to the skeleton of music.