Orchestral Jazz is a musical genre that blends elements of jazz with orchestral arrangements. It typically features a large ensemble, including strings, brass, and woodwinds, alongside traditional jazz instruments like the piano, bass, and drums. This fusion allows for rich textures and complex harmonies, creating a unique sound that can be both sophisticated and accessible. Notable composers in Orchestral Jazz include Duke Ellington and Gil Evans, who are known for their innovative orchestration techniques. Their works often incorporate improvisation, a hallmark of jazz, while maintaining the structured form typical of orchestral music. This genre showcases the versatility and creativity of both jazz and classical traditions.