The Planets is a seven-movement orchestral suite by English composer Gustav Holst, composed between 1914 and 1916 and first performed in 1918. The work employs a large orchestra and inventive orchestration to create contrasting moods and character sketches across its movements, and it occupies a significant place in Holst's output and in early 20th-century orchestral repertoire due to its distinctive harmonic language and influence on later orchestral and film scoring practices.