Symphonie fantastique, Op. 14 is a programme symphony by French composer Hector Berlioz, composed and first performed in 1830. The work exemplifies Romantic-era programme music through its large-scale and vivid orchestration, the use of a recurring idée fixe to represent the protagonist, and a dramatic programmatic narrative of obsessive passion and hallucinatory visions, marking an important development in Berlioz's career and nineteenth-century orchestral practice.
