File contains a cassette tape with 2 episodes of Zwicker. Zwicker Episode 1 Upper Case and Zwicker Episode 2: The Fiend in the Fortress. Episode 1 was performed at the CBC Playhouse on January 5, and episode 2 was recorded at the same location on January 12, 1978. Zwicker was played by David Renton, Diana was played by Nicola Lipman. In the second episode Ozzie MacDonald is played by Ozzie MacDonald. The music was written by Stephen Pedersen. It was performed by three musicians on the flute, bass and keyboard. The keyboard was played by Monique Gusset [later changed her name to Monique Luce Gibson]. The series was written by Silver Don Cameron and produced by Don Allison.