The exhibition Cage's Satie, with related installations of La Monte Young, George Brecht, and Buckminster Fuller, closes at MAC Lyon on December 30th. If you are unable to make it in person, you can take a virtual tour and listen to a soundtrack prepared by Mikel Rouse. Philadelphia's Beyond Silence fest will spill over into the new year, with a focus on the Number Pieces. And, tonight in NYC, the American Symphony plays a program of Cage and Feldman at Carnegie — where the two men had a famous Webern meet-up in 1950 — while Robert Pinsky and Wes Stace give their version of How to Get Started at Symphony Space. The rest is