Mahler: Ich bin der Welt abhanden gekommen is based on Mahler’s 9th Symphony. In the four parts of this film, renowned conductor Riccardo Chailly and Mahler’s internationally acclaimed biographer, Henry-Louis de la Grange, analyse the four movements of the symphony. Reaching into the heart of Mahler’s music was how Chailly chose to celebrate his June 2004 departure from the Royal Concertgebouw Orchestra, after 16 years of close collaboration.