Final answer:
The question explores the Romantic-era composers who balanced the line between classical foundations and innovative approaches, with a nod to Schoenberg's radical departure from convention.
Step-by-step explanation:
The subject of the question is regarding the influences and characteristics of certain symphonies and their relation to Romantic-era music, particularly in reference to the works of Wagner, Schubert, and Beethoven's ninth symphony.
During the Romantic era, composers like Brahms, Tchaikovsky, Schumann, Chopin, and Wagner became well-known for pushing the boundaries of Classical music while still retaining some of its foundational elements such as symphonies, concertos, and operas.
These Romantic composers emulated classical figures like Haydn, Mozart, and Beethoven but also introduced new elements, exploring nationalistic themes and taking Romantic techniques to their limits as seen with Mahler and Strauss. Furthermore, the question touches upon Schoenberg's innovative atonal music and the twelve-tone scale, which marked a significant departure from traditional Western music scales and expectations.