Ludwig van Beethoven's music is characterized by its emotional depth and innovative structures. His compositions often blend classical forms with romanticism, showcasing a dynamic range of moods and techniques. Beethoven's use of contrast—between loud and soft passages, or dissonance and harmony—adds to the dramatic effect of his works. He also expanded the traditional sonata form, enriching it with varied themes and complex harmonies. His later pieces, often composed while facing deafness, reflect profound introspection, showcasing how personal struggles influenced his unique musical voice.