Composer Lyle Chan reveals the startling effect of Sydney siege on the creation of his new orchestral work. Untitled (Dec 2014) was begun as a ‘party piece’ for orchestra. When the Queensland Symphony Orchestra asked if I had a piece to contribute to its new music initiative, Current, I wanted to give them a fun, glittering showpiece. I wrote about 3 minutes of high- energy frolicking, almost mischievous music before, out of nowhere, came the Sydney hostage crisis.    I tried to ignore it but got absorbed into watching it unfold on TV. Martin Place is a 10-min walk from my home across Woolloomooloo Bay and I’m there a few times a week. That day I rescheduled my meetings in the area because it was out of bounds, surrounded by police, but my friends who worked inside the cordoned area were not allowed to leave, which distressed them because of speculations a bomb could go off at any time. I went to bed that night with no further information and woke early the next morning to news of the saved and the killed. I walked to Martin Place that morning and saw the start of the floral tributes. As I…