What’s Radio Onstage Theater? Radio Onstage – a play, usually humorous, 1 to 3 acts, 1 simple set, small casts – 7 to 9 actors; 15 to 30 minutes. Setting: radio broadcasting studio. Audience sees a radio show being produced. A radio station break usually precedes Act 2. This break allows cast banter among themselves, and with the audience. In some Acts: ad commercials/jingles. Here’s Our Cast:Emcee/Station Manager – appears in most Radio Onstage plays. As radio show host, briefs audience befo