Independent creation and improvisation.

1. Independent creation: This is a creation model completed independently by a single composer. Composers use their personal creative inspiration and skills to transform musical ideas into music. Including writing music scores, determining the structure of the music, selecting instruments and parts, etc.

2. Improvisation: This means that during the process of playing or singing on the fly, the artist creates based on immediate inspiration and creativity. Improvisation is common in styles such as jazz, blues, and folk music, where artists improvise or sing to create unique musical expressions.