Director of the Imperial Opera of Vienna from 1897-1907, his death fixation helped shape his Kindertotenlieder,or "Songs on the Death of Children", and a year after his cancer diagnosis he wrote Song of the Earth.  
Failed romances helped inspire this composer's song cycle Lieder eines fahrenden Gesellen and the cantata Das Klagende Lied.  Director of the Imperial Opera of Vienna from 1897-1907, his death fixation helped shape his Kindertotenlieder,or "Songs on the Death of Children", and a year after his cancer diagnosis he wrote Song of the Earth.  FTP, name this Austrian-Jewish composer best-known for the Titan Symphony, the Resurrection Symphony, and the Symphony of a Thousand.
Failed romances helped inspire this composer's song cycle Lieder eines fahrenden Gesellen and the cantata Das Klagende Lied.  
Gustav Mahler