1. The base instrument must be an extremely smart and intelligent instrument. During the performance, one must be able to adapt to different music styles and rhythms anytime and anywhere, closely coordinate with the sounds of other instruments, and at the same time silently hide one's true identity. The performance style must be very unique and outstanding, allowing people to learn from the many sounds. Easily discern presence.

2. In addition to a smart and unique playing style, the undercover instrument must also have an incredible power to manipulate the sounds of other instruments, adjust the atmosphere and emotion of the entire music, and be able to make the audience listen to the music. At this moment, I naturally felt a deep emotional resonance, as if the whole world had become quiet for this moment.

3. The most important thing is that the undercover instrument must be a hidden killer who can use the most vicious notes to capture people's emotions instantly when the audience least expects it. It not only has a charming The charm can make the audience confused and fascinated, and fall into a music world that they can never extricate themselves from.

4. It is impossible to determine who the undercover instrument is, but the undercover instrument must be an extremely smart, unique, and mysterious instrument whose existence can make people feel the power and magic of music!