Not much that I can add to Learsfool's excellent posts. I would simply further stress a couple of points:
The importance of Wagner cannot be overemphasized. As Learsfool points out, his influence on the direction of music was greater than just about any other composer. What is seldom pointed out is the vast influence that he had on other art forms; notably literature. His music and compositional style was one of James Joyce's primary influences which led to the lyricism and "orchestral" gestures in his writing. Wagner was an artistic giant of the highest order and undoubtedly deserving a place in a
"greatest" list.
The subject of Beethoven is a particularly interesting one. I completely agree that his Romanticism is exaggerated; he was a Classicists more than anything and a key transitional figure on the way to true Romanticism. The idea that one composer "introduced" the Romantic era in music is missing the point of how music (and all art) evolves. The move away from the clarity and order of Classicism to the more emotion-driven and eventual programatic aspects of Romanticism was not a sudden one. For me, one of the more interesting facts about Beethoven and how his music points to a slow move away from Classicism is the fact he was the first major composer to make a living as an "independent contractor" (in modern parlance). He was the first to not be employed by a noble or court as "composer in residence" and made his living selling his works and teaching. If that independence, with all it's uncertainty, doesn't inspire romance, I don't know what would.
The importance of Wagner cannot be overemphasized. As Learsfool points out, his influence on the direction of music was greater than just about any other composer. What is seldom pointed out is the vast influence that he had on other art forms; notably literature. His music and compositional style was one of James Joyce's primary influences which led to the lyricism and "orchestral" gestures in his writing. Wagner was an artistic giant of the highest order and undoubtedly deserving a place in a
"greatest" list.
The subject of Beethoven is a particularly interesting one. I completely agree that his Romanticism is exaggerated; he was a Classicists more than anything and a key transitional figure on the way to true Romanticism. The idea that one composer "introduced" the Romantic era in music is missing the point of how music (and all art) evolves. The move away from the clarity and order of Classicism to the more emotion-driven and eventual programatic aspects of Romanticism was not a sudden one. For me, one of the more interesting facts about Beethoven and how his music points to a slow move away from Classicism is the fact he was the first major composer to make a living as an "independent contractor" (in modern parlance). He was the first to not be employed by a noble or court as "composer in residence" and made his living selling his works and teaching. If that independence, with all it's uncertainty, doesn't inspire romance, I don't know what would.