The term "orchestral" refers to anything related to an orchestra, which is a large group of musicians who play together. Orchestras typically include string, woodwind, brass, and percussion instruments. They perform a wide range of music, from classical compositions to contemporary pieces, often under the direction of a conductor. Orchestral music is characterized by its rich textures and harmonies, created by the combination of various instruments. Famous composers like Ludwig van Beethoven and Wolfgang Amadeus Mozart are known for their orchestral works, which are performed in concert halls around the world.