In the scene described, Chastity Bjornsen is listening to a song on her car radio that prompts a strong emotional reaction from Doc. The track, a brass-heavy arrangement by Herb Alpert, is a cover of the playful and catchy tune "Yummy Yummy Yummy" originally by Ohio Express. Doc's realization of this cover fills him with dread as he reflects on the implications of such music in the context of his surroundings.

The moment captures a blend of nostalgia and discomfort, highlighting how the music connects to deeper themes within the narrative. Doc’s horror at the tune suggests an underlying tension in the world he inhabits, where seemingly innocent pop culture references are intertwined with more serious matters at play. This vivid portrayal of music serves to enrich the atmosphere of the story.