There’s nothing like the 1977 Tom Petty & The Heartbreakers’ song, “American Girl” to inspire a feeling of carefree, sing-along abandon in its fans. Appearing on their debut album, this popular track from the late ‘70s had enough staying power to go from radio to film, making appearances in the 1982 classic, Fast Times at Ridgemont High and the 1991 masterpiece, The Silence of the Lambs.

In Fast Times, “American Girl” plays over a montage of the first day of school. For some it’s a return to another year of popularity; for others, like Stacy (Jennifer Jason Leigh), it’s the start of a challenge. As soon as Stacy appears in this montage, the lyrics begin: “Well, she was an American girl/raised under promises/She couldn’t help thinking that there was a little more to life/somewhere else.”

She meets a handsome older guy named Ron (D.W. Brown), a stereo salesman in the mall. Stacy lies about her age and agrees to a date with him, 26. Stacy has abandoned her rule-following American girl. She sneaks out and runs to meet Ron on a street corner, who picks her up in his car. As Petty sang: “After all, it was a great big world/with lots of place to run to.”

As this young girl in Fast Times wanted to quickly become a young woman, the placement of the song in The Silence of the Lambs, shows how a young woman can quickly revert to being a young girl. Catherine (Brooke Smith) is driving by herself, singing along to “American Girl” on her stereo, her familiar nature bonding the viewer to her. Catherine pounds along on the steering wheel and not only sings the lyric, “Make it last all night,” but also tries to sing the backup at the same time, which only makes her all the more endearing. She stops singing, and the camera remains focused on her face, allowing for a final look, warning the invested observer that this carefree American girl, safe in her protective environment, will soon be anything but. She helps a man (Ted Levine) outside her apartment, her heart in the right place, yet her naivety gets her in serious trouble.

Although both films are different—Fast Times, a sharp, slightly unnerving comedy, Silence, a chilling, totally disturbing thriller—the choice to include “American Girl” is a testament to how well the song works in capturing wide-eyed innocence. Thankfully, both characters come out the other side as stronger American women.