The correct spelling is "rit.", which means to slow down gradually, belonging to the term of music speed.

"Rit" is the abbreviation of ritardando (Italian), which means "delay, gradually slow down". In music, this term usually appears on the score, which means to slow down gradually and reach a certain rhythm change. For example, if a rhythm is marked with "rit.", then the player should slow down the rhythm until the rhythm in the designated area is paused or completely stopped.

There are two kinds of musical speed terms: one is the basic speed term, and the other is the changing speed term. The basic speed term indicates the uniform speed of the whole piece of music or a piece of music.

The term change speed is opposite to the basic speed term, which indicates the temporary change of speed during playing. Early expressions used for recording speed have been used up to now, such as Presto (emergency board) and Lento (adagio).

Musical terms refer to professional terms used to guide performers in musical performances. It includes not only the elements of music (such as speed, expression, strength, mode, harmony, melody, etc.), but also the periods and genres of music (such as medieval period, baroque period, classical period, The Romantic Period, national music school, etc.).

To play the effect of "rit." correctly, the performer needs to master the following skills:

1. Pay attention to details: To play the effect of "rit." correctly, it is necessary to pay attention to the starting and ending positions and the changing speed. Usually, the player needs to gradually slow down the rhythm from the starting position until he reaches the ending position of the specified position.

2. gradual change: the change from the starting point to the ending point should be gradual, and don't suddenly slow down. Only in this way can the effect of "rit." be accurately expressed.

3. Keen observation: During the performance, pay attention to the change signals of the conductor or other musicians. If everyone slows down, then we should follow up in time.

4. Thinking expression: Different music and different performance situations need different expressions. Players should decide how to present the effect of "rit." according to their own feelings and thoughts, so as to express their feelings or thoughts.