Gustav Holst was a British composer of the Romantic era. He was trained as a pianist as well as playing the trombone. studied music at the Royal College in London. He later was appointed the director of music at St. Paul's Girls' school and later on in his career taught at University College, Reading and at the Royal College of Music. He wrote music for the theater, opera, vocal, and choral music, and orchestral music. His most famous work is The Planets.