Initially starred Stephanie Lawrence (Mrs. Johnstone); Con O’Neill (Mickey); Warwick Evans (Narrator); Jan Graveson (Linda); Mark Michael Hutchinson (Eddie); Barbara Walsh (Mrs. Lyons); Ivar Brogger (Mr. Lyons); Kerry Butler (Ensemble); James Clow (Sammy); Robin Haynes (Policeman/Teacher); Philip Lehl (Ensemble); Regina O’Malley (Donna Marie/Miss Jones); Sam Samuelson (Perkins); John Schiappa (Ensemble); Anne Torsiglieri (Brenda); Douglas Weston (Ensemble).
Later, cast replacements included Petula Clark making her Broadway debut as Mrs. Johnstone, with David Cassidy and Shaun Cassidy as her sons. Regina O’Malley, Carole King & Helen Reddy replaced Petula Clark later in the Broadway run.
With Kerry Butler (Understudy for Donna Marie); Robin Haynes (Understudy for Mr. Lyons); Philip Lehl (Understudy for Mickey); Regina O’Malley (Understudy for Mrs. Johnstone & Mrs. Lyons); Sam Samuelson (Understudy for Eddie); John Schiappa (Understudy for Sammy, Narrator) and Anne Torsiglieri (Understudy for Linda)
Assistant Conductor: Mark Berman; Keyboards: Mark Berman; Acoustic and Electric Guitar: Robert Kirshoff; Acoustic and Electric Bass: Bob Renino; Drums: Raymond Grappone; Percussion: Barry Centanni; Reeds: Mike Migliore and Billy Kerr and Trumpet and Flugelhorn: Neil Balm.
Music arranged by Del Newman; Assistant Scenic Design: Leigh Rand; Assistant Costume Design: Elizabeth Hope Clancy; Hair Stylist: Robert-Charles Vallance; General Manager: Stuart Thompson; Company Manager: Bruce Klinger; Assistant to Mr. Thompson: Eric Muratalla; Technical Supervisor: Gene O’Donovan, Neil Mazzella and Aurora Productions; Musical Coordinator: Mort Silver; Casting: Pat McCorkle; Press Representative: Philip Rinaldi; Press Assistant: Lotte Stavisky; Press Associate: James L.L. Morrison; Advertising: Serino Coyne, Inc. and Photographer: Joan Marcus