Gustav Mahler's massive Fifth Symphony rages on for over an hour. But in the middle of that storm, there's a 10-minute oasis of calm. The Adagietto from Mahler's Fifth has been used for everything from funerals for heads of state to Olympic skating routines. Most people hear it as an outpouring of grief, but some say there's much more to it than that. In today's show, the story behind Mahler's Adagietto and a performance by the Australian Chamber Orchestra.