How can having a theme song help ace the college interview?
If you have a theme song, the theme is probably YOU, what type of person you are, what you like to do, what you want to do. It can remind you of who you are. Truthfully, I've never had a student with a "theme song" (at least not one you could tell an interviewer about!), but it could certainly be helpful, particularly for students interested in the arts.