The New Yorker’s Alex Ross described Pulitzer Prize-winner John Luther Adams’ sprawling, outdoors work “Inuksuit” — a percussive piece that uses the open air as its acoustic canvas — as “the ultimate environmental piece.” This epic composition for large percussion ensemble will be performed on the David Karetsky Music Lawn outside the Benedict Music Tent on Aug. 7. The performances are a co-presentation of the AMFS and Bravo! Vail.