My American Cousin -- Film Description:
"The film takes place in the summer of 1959, when rock-and-roll music was blasting out of every jukebox [...] A precocious twelve-year old finds herself wishing she was sixteen and then one hot, still summer night, Sandy's life changes forever. [...] Both attracted and fascinated by her fearless cousin, Sandy is hopelessly stranded between her parents' strict and conservative expectations and the seduction of the rock-and-roll culture that Butch personifies."
-- Festival of Festivals

Source:
Festival of Festivals [Programme]. Toronto: Festival of Festivals, 1985. (p. 96)