didn't have the same "professional" singing skills of other members of the film's cast. Despite this, Recht wanted her for the part of Bibi, and thus, she was cast for the role. Recht described Stewart as "shocked" and "trembling all over" when she got the part. Recht lied to Golan that Stewart "was a great singer" to convince Golan to cast her Bibi. Golan eventually noticed her poor singing, and he, as Stewart explained, "sent me to a voice coach who actually thought I was fine for the movie, but [the producers] kind of got cold feet." Thus, Mary Hylan, a "terrific professional singer from L.A." as Stewart described her, served as Bibi's singing voice for the film. Clinton first noticed Hylan singing at a Christmas party in 1978, and "she just blew me away," he recalled. Filming According to Recht, he and Yotvat initially planned The Apple to cost $4 million to produce, "but when we were in London, Menahem [Golan] used to go like every week to Berlin and come back with another million. And then we got to $10 million." This led Golan to shoot scenes with settings that looked bigger than what Recht wanted, which he was dissatisfied with. Principal photography took place from September to December 1979 in West Berlin. The Apple editor Alain Jakubowicz claimed that, as with Golan's previous works, the original footage was around a million feet long, or four hours worth, and "five to six" cameras were used to shoot the musical sequences. The opening concert sequence was shot at the main hall of Internationales Congress Centrum Berlin and was filmed for five days in a row. The sequence for the track "Speed" was filmed at the Metropol nightclub, which held the Guinness World Record for biggest indoor laser show. The outside hippie scenes were filmed at Schloss Park, located in Konigstrasse. Some scenes in the film were shot in a factory that formerly produced poison gas during World War II. A majority of the extras for The Apple were students at Berlin American High School. Ray Shell, who portrayed Shake and described making the film as "big fun," was replaced by a stunt double for his dancing shoots four times, and a scene for a song titled "Slip and Slide" was cut from the final product due to Shell's poor dancing. Nigel Lythgoe and Ken Warwick served as choreographers for