Romantic music is a term describing a style of Western classical music that began in the early 19th century; "romantic" is an adjective often used to describe music related to romance and love.
Romantic music as a movement evolved from the formats, genres and musical ideas established in earlier periods, such as the classical period, and went further in the name of expression and syncretism of different art-forms with music. Romanticism does not necessarily refer to romantic love, though that theme was prevalent in many works composed during this time period, both in literature, painting, or music. Romanticism followed a path that led to the expansion of formal structures for a composition set down or at least created in their general outlines in earlier periods, and the end-result is that the pieces are "understood" to be more passionate and expressive, both by 19th century and today's audiences. Because of the expansion of form (those elements pertaining to form, key, instrumentation and the like) within a typical composition, and the growing idiosyncrasies and expressiveness of the new composers from the new century, it thus became easier to identify an artist based on his work or style.
Romantic music attempted to increase emotional expression and power to describe deeper truths or human feelings, while preserving but in many cases extending the formal structures from the classical period, in others, creating new forms that were deemed better suited to the new subject matter. The subject matter in the new music was now not only purely abstract, but also frequently drawn from other art-form sources such as literature, or history (historical figures) or nature itself. .