I want to know the answer to the following question:
Who marked the switch from classical to romantic eras in classical music?
All the background I'm provided with is that "Other composers of the Austro-German tradition who achieved international fame include Brahms, Wagner, Haydn, Schubert, Händel, Schumann, Liszt, Mendelssohn Bartholdy, Johann Strauss II, Bruckner, Mahler, Telemann, Richard Strauss, Schoenberg, Orff, and most recently, Henze, Lachenmann, and Stockhausen.". Is that enough to answer the question?
Answer: no