“Sila is actually five separate scores – one each for strings, winds, brass, percussion, and chorus – that can be performed concurrently in any combination, from one section at a time to all five together. ‘If you just perform it with strings, then it’s pretty delicate, like a Japanese rock garden,’ Adams says. But gather the whole thing into an ensemble that is 80 strong, and the result should be able to hold its own.” It’ll need to – it’s premiering outdoors in Manhattan.