Roulette celebrates the occasion of Terry Riley’s 90th birthday with two major works, generative open scores written 60 years apart. To begin the night, Claire Chase gives a solo performance of The Holy Liftoff (2024), premiered recently to acclaim, as part of her Density 2036 project. The 21st NYC IN C, our city’s longest-running annual presentation of Riley’s legendary In C (1964), will follow. Organized by musicians Nick Hallett and Zach Layton, the concert brings together a diverse cross-section of the instrumentalists, improvisers, composers, technologists, and vocalists that make up the experimental music ecosystem.