Zapruder film. That said, Costa-Gavras has stated that the Zapruder film had not been widely circulated in Europe at the time and that Kennedy's assassination did not influence the production. Principal photography took place in Algiers at actor Jacques Perrin's suggestion, which the filmmakers approved for its Mediterranean]environment and because the Ministry of Culture was accommodating. In Algiers, the Hotel St. Georges and the central square were filming locations, while Paris' Théâtre des Champs-Élysées was used for the ballet scenes. Marcel Bozzuffi performed his own stunts wrestling on the "Kamikaze" vehicle due to the production's lack of budget for professional stunt performers. Costa-Gavras chose Z as the title of the film based on its common occurrence in Greek graffiti for "He lives" (or even "Lambrakis you live; be our guide!" [Λαμπράκη ζεις, εσύ μας οδηγείς!; Lambráki zis, esý mas odigís!]); Costa-Gavras acknowledged a one-letter film title was unconventional and said Yves Montand expressed concern it would be confused with Zorro, but Costa-Gavras said the novelty of the idea won him over. Soundtrack The soundtrack by Mikis Theodorakis was a hit record. The Greek junta had placed the composer under house arrest but he was able to give his approval to Costa-Gavras for the use of existing musical pieces. The film features, but does not credit, Pierre Henry's contemporary hit song "Psyché Rock". The soundtrack as released on LP and CD replaces Henry's song with a similar track written by Theodorakis titled "Café Rock." Main Title (Antonis) from the "Mauthausen Trilogy" of Mikis Theodorakis The Smiling Youth The Chase-The Smiling Youth Murmur of the Heart Cafe Rock Arrival of Helen-The Smiling Youth Batucada The Smiling Youth (Bouzouki Version) The Smiling Youth Who's Not Talking About Easter Finale-The Smiling Youth Murmur of the Heart In This Town "The Happy Youth" and "Who's Not Talking About Easter" were among the poems adapted from Brendan Behan's play The Hostage by Theodorakis in 1962. By referring to the Irish struggle against British rule rather than Greek realities, the poems offered a way to circumvent censorship in Greece and condemn Greece's post-war right-wing establishment. "The Smiling Youth" (το γελαστό παιδί) was also one of the nicknames of Lambrakis. Reception and legacy Prints of the film were acquired by the Black Panther Party and shown at underground screenings. An advance copy of the film was shown at the United Front Against Fascism conference in 1969. It first