For the first time in the UK an orchestra will be performing John Cage’s silent work 4’33” on the radio. “Cage’s seminal work, 4’33”, which consists of four minutes and 33 seconds of silence, will be the highlight of a concert on Radio 3 at 7.25pm. In readiness for the performance, Radio 3 bosses will have to switch off their emergency back-up system – designed to cut in when there is an unexpected silence on air.”