The document discusses the key aspects and history of Romanticism in music from the late 18th to early 19th century. Some of the major composers during this period included Franz Schubert, Felix Mendelssohn, Robert Schumann, Richard Wagner, and Frederic Chopin. Romantic music emphasized emotion, imagination, individual expression, and freedom of form compared to the previous Classical period. Orchestras also expanded during this era with the founding of music conservatories across Europe and the United States.