The series features numerous song covers sung onscreen by the characters. Murphy is responsible for selecting all of the songs used, and strives to maintain a balance between show tunes and chart hits, as: "I want there to be something for everybody in every episode. That's a tricky mix, but that's very important — the balancing of that." Song choices are integral to script development, with Murphy explaining: "Each episode has a theme at its core. After I write the script, I will choose songs that help to move the story along."
