Tolong jelaskan mengenai Karya dari Gustav Mahler

Symphony No. 1 in D major (?1884–1888; rev. 1893–1896; 2nd rev. 1906).

Symphony No. 2 in C minor (1888–1894; rev. 1903)

Symphony No. 3 in D minor (1893–1896; rev. 1906)

Symphony No. 4 in G major (1892, 1899–1900; rev. 1901–1910)

Symphony No. 5 in C-sharp minor/D major (1901–1902; scoring repeatedly rev.)

Symphony No. 6 in A minor (1903–1904; rev. 1906; scoring repeatedly rev.)

Symphony No. 7 in E minor (1904–1905; scoring repeatedly rev.)

Symphony No. 8 in E-flat major (1906–1907)

Das Lied von der Erde (subtitled A Symphony for One Tenor and One Alto (or Baritone) Voice and Orchestra, After Hans Bethge's "The Chinese Flute") (1908–1909)

Symphony No. 9 in D major (1908–1909)

Symphony No. 10 (1910–1911) (unfinished; a continuous "beginning-to-end" draft of 1,945 bars exists, but much of it is not fully elaborated and most of it not orchestrated.)