Fillin' Up My Eyes

Listening to Britney Spears' "Fillin' Me Up" (stop laughing, it's a great song) I kept thinking she was covering something from a different song, but I couldn't place it. After a good listening, I realized it it follows a similar melody to the chorus from "My Eyes" in Dr. Horrible's Sing-Along-Blog. "Listen close to everybody's heart, and hear that breaking soooound."

I require a mashup. Some of you must have skills -- go on: I triple-dog-dare you.

Edit:( YouTubez for the curious )