The instruments used in a Broadway musical are typically the same as those used in a classical orchestra, but there are some additional instruments that are sometimes used, such as the synthesizer and the electric guitar. The orchestra is typically conducted by a music director, who is responsible for leading the musicians and ensuring that the music is played correctly.
The orchestra plays an important role in a Broadway musical, providing the music that accompanies the singing and dancing. The orchestra can also help to create the mood of the musical, and can be used to underscore important moments in the story.