Which composer is known for inventing the symphonic poem?

Franz Liszt is recognized for inventing the symphonic poem, a form that allows a composer to explore a specific narrative or thematic idea through orchestral music. This genre is characterized by its free-form structure, which enables the composer to depict a story, feeling, or event without adhering to established symphonic forms. Liszt's innovative approach marked a departure from traditional symphonic writing, allowing for more expressive and descriptive music. His groundbreaking works in this style, such as "Les Préludes," exemplify how he combined music and literature, offering a vivid experience that reflects the emotions and ideas behind the narratives. This invention was pivotal in the development of later symphonic and programmatic music, influencing numerous composers in the Romantic era and beyond.