When Matt Groening hired Danny Elfman to write the theme for The Simpsons, he gave him a mixed tape of songs that he wanted the music to sound like: The theme from The Jetsons, some of Esquivel’s “space age bachelor-pad music,” a teach-your-parrot-to-talk record, selections from Nino Rota’s Juliet of the Spirits soundtrack and this unused Frank Zappa-produced radio commercial for Remington electric shavers that features the vocal stylings of none other than a young Linda Ronstadt.

The future queen of country rock is nearly unrecognizable here, speeded-up, multi-tracked and sounding like she’s just taken a hit off a helium balloon. At the end, Zappa tells listeners that the Remington electric razor “cleans you, thrills you… may even keep you from getting busted.”

According to legend, after giving the tape several listens Elfman told Groening, “I know exactly what you’re looking for!”