The main functions of the conductor in the orchestra are:

1. Leading the overall situation:

The conductor needs to have a full understanding of the entire music and integrate each sound into the orchestra. The parts are organically organized together, playing the role of each instrument and integrating into a whole.

2. Control the rhythm:

The conductor determines the rhythm, speed, emotion, etc. of the music through various actions, and unifies the performance of each part. In particular, controlling the synchronization of different voices is very important.

3. Express emotions:

The conductor expresses the emotional connotation of the music through facial expressions and body language, and drives the emotional expression of the orchestra.

4. Detail shaping:

The conductor needs to pay attention to the details of the music, such as changes in intensity and speed, and lead the orchestra to complete these musical details through gestures.

5. On-site cooperation:

The conductor needs to cooperate with soloists, musicians, etc. on-site to give immediate instructions on the ups and downs of the music to ensure a smooth performance.

6. Improve rehearsals:

The conductor constantly improves the details of the music during rehearsals and improves the coordination accuracy of the orchestra.

So the conductor is the key to the smooth performance of the orchestra. It requires the understanding of music, sense of rhythm, emotional expression, teamwork ability, etc.