Gustav Mahler  

Johannes Brahms was a Bohemian-born Austrian composer and conductor who was highly regarded during his lifetime as one of the leading figures in orchestral and operatic music. Despite this recognition, he has since been recognized as one of the most significant late Romantic/early Modernist composers. However, his music was not fully accepted by Vienna's musical establishment while he was still alive. Brahms primarily composed symphonies and songs but often blurred the lines between orchestral Lied, symphony, and symphonic poem in his approach to genre.