An overture in theatre is a musical introduction that typically precedes a performance, setting the tone for the show. It often features themes or melodies that will be heard throughout the production, allowing the audience to become familiar with the music. Overtures are commonly used in operas and musicals, enhancing the overall experience. The purpose of an overture is to engage the audience and create anticipation for the story to unfold. It serves as a bridge between the audience and the performance, helping to establish the mood and atmosphere. Famous examples of overtures can be found in works by composers like Giuseppe Verdi and Richard Wagner.