The Saja Boys' song "Soda Pop" from the K-Pop Demon Hunters soundtrack has a dual meaning: it's a catchy, innocent-sounding K-Pop song, but also subtly references the Saja Boys' true nature as demons who feed on souls.

In the film, the Saja Boys are a boy band of five demons disguised as idols who debut with this song to captivate fans and ultimately steal their souls. The lyrics express an intense desire for another person, using the metaphor of thirst and describing the desired person as "My little lemonade", according to Nolae. However, this "thirst" also represents their need to consume the souls of their fans.

The song's composition and lyrical approach were intentionally designed to be "[c]ute, bubbly, intentionally annoyingly infectious" and "meant to lure you in", while masking a "more toxic" and predatory meaning, says Nolae. This reflects the Saja Boys' strategy of deceiving and manipulating their listeners through a charming exterior that conceals their dark intentions, according to Screen Rant.