Rebirth and descent refers to adjusting the height or pitch of notes through the player's skills, so that the notes rise or fall from the original position to a higher or lower position. This technique is often used in the performance of music works, making them more vivid, vivid and varied, and enhancing the expressive force and artistic appeal of music works. Rebirth and descent are advanced skills in music art and have high application value in music teaching.

To achieve rebirth and descent, the performer needs superb skills and physical and mental cooperation. Players need to accurately grasp the position and pitch of each note, grasp the emotion, rhythm and speed of music, and rationally use the changes of strength and volume, so as to achieve the effect of rebirth and decline again. Players need long-term practice and tempering to master this advanced skill and play music perfectly.

Rebirth and descent can not only enhance the expressive force and artistic appeal of music works, but also make music works more attractive and appealing. Through rebirth and descent, players can show deeper emotions and thoughts on specific notes, thus making music works more delicate and moving. Rebirth and decline can also make music works more colorful and improve the interest and appreciation of the audience. At the concert scene, the performer's rebirth, backward skills and the charm of music will also become a beautiful scenery in the audience's heart.