The Rocky Horror Picture Show verbatim at each screening. Performance groups became a staple at "Rocky Horror" screenings due in part to the prominent New York City fan cast. The New York City cast was originally run by former schoolteacher and stand-up comic Sal Piro and his friend Dori Hartley. Hartley who portrayed Dr. Frank N. Furter, was one of several performers, including Will Kohler as Brad Majors, Nora Poses as Janet, and Lilias Piro as Magenta in a flexible rotating cast. The performances of the audience was scripted and actively discouraged improvising, being conformist in a similar way to the repressed characters. On Halloween
The Rocky Horror Picture Show was living as an unemployed actor in London during the early 1970s. He wrote most of "The Rocky Horror Show" during one winter just to occupy himself. Since his youth, O'Brien had loved science fiction and B horror movies. He wanted to combine elements of the unintentional humour of B horror movies, portentous dialogue of schlock-horror, Steve Reeves muscle flicks, and fifties rock and roll into his musical. O'Brien conceived and wrote the play set against the backdrop of the glam era that had manifested itself throughout British popular culture in the 1970s. Allowing his concept to come into being,