Free tickets were released yesterday for Diller Scofidio + Renfro and David Lang‘s “The Mile-Long Opera: a biography of 7 o’clock,” taking place on NYC’s High Line from 3-7 October. And while the first batch was claimed quickly, we’ve been informed to keep an eye on milelongopera.com for other ticket releases. Set along a stretch of the revitalized, above-ground park and featuring 1,000 voices, the opera is meant to be experienced as guests walk along, stepping in and out of range of voices and their stories. Poets Anne Carson and Claudia Rankine wrote the libretto—inspired by answers they received when asking New Yorkers “What does 7PM mean to you?” It’s bound to be an experience unlike any other—and there are still opportunities to see it for yourself. While it’s taking place in a public space, tickets are mandatory for attendance.