A symphony is a large musical composition typically written for an orchestra, which includes strings, woodwinds, brass, and percussion instruments. It usually consists of multiple sections called movements, each with its own distinct character and tempo. Composers like Ludwig van Beethoven and Wolfgang Amadeus Mozart are famous for their symphonies, which often explore a range of emotions and themes. Symphonies are performed in concert halls and can last anywhere from 20 minutes to over an hour. They are a key part of classical music and showcase the skill of both the composer and the musicians. Listening to a symphony can be a powerful experience, as it takes the audience on a journey through sound.