To put it simply, HighC is doubled up by one, that is, two dots are added to the 1 in the key of C. hic is recognized as the limit of treble and male voice is forbidden. It is also the most important touchstone in the hearts of all outstanding tenors and the standard of strength for soprano singers.
The biggest reason is that hic is unsustainable. For example, Pavarotti, Caruso, and Gigli. Among the three of them, Caruso and Gigli can sing high notes, but Pavarotti is not as good at high notes. Of these two, Pavarotti's hic lasts the longest, and the difficulty of maintaining his bel canto sustain is incomparable with the difficulty of singing a short high note. Therefore, Pavarotti is dubbed the best tenor in the world. In fact, it's because Lao Pa is the best hic in the world.
Extended information:
Music is an art that reflects human emotions in real life (English name: music; French name: musique; Italian: musica). Music can be divided into two major types: vocal music and instrumental music, and can be roughly divided into classical music, folk music, original music, modern music (including pop music), etc. Among art types, music is abstract, and music can be divided into Eastern music and Western music from the historical development.
The ancient Chinese theory in the East, led by Chinese Han music, is based on the pentatonic scale, that is, Gong, Shang, Jiao, Zheng, and Yu, while the West is based on the heptatonic scale. Music is pleasing to the eyes and brings auditory enjoyment to everyone. Music can improve people's aesthetic ability, purify people's souls, and establish lofty ideals. We express our emotions through music and release many of our emotions.