'Pied Piper' Anachronism: Title Role Taken by Donovan, Folk Singer & 'Z.P.G.,' on Population Growth, Shares Bill
By Vincent Canby, 5/26/72, New York Times

You wouldn't know by reading the ads but "The Pied Piper,"
which opened at a number of theaters here yesterday with a
totally befuddled science-fiction film called "Z.P.G.,"
is a new work by Jacques Demy,
[ . . . ]
"Z.P.G.," initials that stand for zero population growth,
is a sometimes funny (unintentionally), untimely meditation
on the earth's over-population problems, set in some future
smog-bound England where the World Deliberation Council has
decreed that for 30 years there shall be no babies born.

Women mad for motherhood who refuse to be content with
mechanical dolls programmed to say "Mummy, I love you Mummy,"
take to giving birth in cellars and stealing each other's
offspring. Geraldine Chaplin, who has become astonishingly
beautiful since "Dr. Zhivago," Oliver Reed & Diane Cilento
play the foolish roles without a single snicker.

The Cast: [ . . . ] Z.P.G., directed by Michael Campus;
screenplay by Max Ehrlich & Frank De Felitta; director of
photography, Michael Reed; supervising editor, Richard C.
Meyer; editor, Dennis Lanning; produced by Thomas F. Madigan;
a Sagittarius production, distributed by Paramount Pictures.
Runnng time: 95 minutes. At the R.K.O. 23d Street Theater,
23d St near 8th Av, & other theaters. This film has been
classified PG. Russ McNeil...Oliver Reed, Carole McNeil...
Geraldine Chaplin, George Borden...Don Gordon, Edna Borden...
Diane Cliento

https://www.nytimes.com/1972/05/26/a...ovan-folk.html