There are many repertoire of dazzling skills in classical music, and there are multiple forces to promote dazzling skills in the development of history. Sometimes, it is the composer who wants to test the limits of sound, writing a passage that the performer at that time generally cannot play for the sake of melody or harmony. Sometimes, it is the composer who does not know enough about a solo instrument to think rationally from the point of view of playing
he writes a piece that is difficult or even impossible to play. Sometimes, it is the performer who takes the initiative to pursue a breakthrough, asking for music that could not be performed in the past
The composer created a repertoire that was extremely difficult to play because of carelessness.