yes. The whole space of piano solo in the concert hall is large, and the volume of piano as a solo is still very small. If there is no microphone, you will not hear the sound far from the stage, so you need a microphone to amplify the sound. Concert hall is a place where concerts and music-related activities are held and where people feel the charm of music. It is usually composed of a concert hall and a small theater, with elegant decoration and appropriate layout.