In 1830, Hector Berlioz composed the Symphonie Fantastique, a groundbreaking work that is considered the first major programmatic symphony. This composition featured an autobiographical narrative and innovative orchestration, showcasing Berlioz's unique musical voice. The symphony's success marked a turning point in the Romantic era, influencing future composers and expanding the boundaries of symphonic music.

Hector Berlioz's invention of the Symphonie Fantastique in 1830 pioneered the concept of literary program music. This innovative approach mirrored the emotional intensity of Romantic poetry, influencing poets like Alfred de Musset to explore complex human emotions through their verse.