He also wrote Lieder with orchestral accompaniment.
In 1897, Mahler converted from Judaism to Roman Catholicism in order to secure a post as artistic director of the prestigious Vienna Court Opera (Jews were virtually prohibited from holding the post at that time). For the next ten years he stayed at Vienna, where he was noted as a great perfectionist. He ran the Opera for nine months of the year, spending the other three composing, mainly at Maiernigg, where he had a small house on the Wörthersee. 
- Symphony 1 "Titan"
- Symphony 2 "Resurrection"
- Symphony 6 "Tragic"
- Symphony 8 "Symphony of a Thousand"
- Das Lied von der Erde (the most special to lovers of Mahler's music )