Why do you need sheet music of John Cage's 4′33″ to perform it?
At 1:45, Kirill Petrenko has the paper score for 4'33" opened on his conductor stand. But use of sheet music feels guileful and uncandid for 4'33". Can't a competent conductor or musician "conduct" or "perform" 4'33" "from memory"? All a competent conductor or musician TRULY needs — is a time, or stopwatch, and/or smartphone (video from Kyle Shaw B.M. Brigham Young University, 2013. M.M. University of Illinois 2015.).