An orchestral conductor is a musician who leads an orchestra during performances. They use a baton or their hands to communicate with the musicians, indicating tempo, dynamics, and expression. Conductors interpret the music and ensure that all the instruments play in harmony, creating a cohesive sound. Conductors often study music theory and composition, and many have experience as instrumentalists. They work closely with the orchestra during rehearsals to refine the performance. Famous conductors, like Leonard Bernstein and Herbert von Karajan, have made significant contributions to classical music and are known for their unique styles and interpretations.