Producer
Conductor
Stage director
Jo Ann, (a trainee children's doctor)
Donny, (her young brother)
Nan, (Their foster mother)
Merlin, (The computer wizard)
Pelegrin, (The space pilot)
Regan, (Their boss)
The presenter
Associate Stage Director
Set designer
Costume designer
Assistant Set designer
Lighting designer
Choreographer
Sound designer
Orchestra