Buddy Foster, Jodie Foster's brother and a child actor in his own right, was up for a role in this film. They wanted him to play the love interest to his own sister. They eventually recast the love interest role and Buddy can be seen in another role.
According to a musician hired for the project, the original story concept centered around an all-girl rock band who was being groomed by an established female pop singer. The script was rewritten so much, the band element of the story was dropped.
Robert Romanus and Cherie Currie appear in this movie together. Thirty years later, Romanus had a small role in The Runaways (2010), a movie about the formation, success, and eventual disintegration of the band that Cherie Currie was in before acting in Foxes (1980).
The movie did get nominated for a couple of awards, both for Young Artist Awards, for Best Family Music Album (United Artists) and for Best Young Actress in a Major Motion Picture for Jodie Foster, but the film did not win in either category.
Second of two films that composer Giorgio Moroder made with British producer David Putnam. The first had been Midnight Express (1978) about two years earlier in 1976 where Moroder had won an Academy Award (Oscar) for Best Original Music Score.
Sally Kellerman has only vague recollections of filming "Foxes". She was shooting another movie simultaneously, "It Rained All Night the Day I Left", which meant a few days of work in Los Angeles followed by several days of shooting in Tel Aviv, Israel. Kellerman says she spent the majority of that year flying in planes.
Cherie Currie revealed to E! Entertainment that one member of the cast ruined one take of a scene by grabbing Currie in an exaggerated romantic way and kissing her. Jodie Foster was not pleased with the goofing around, and ordered the set shut down until everyone could get serious again.