I don't always format the drives I get either. The Duo still has all the previous owner's documents on it although I don't tend to look at them. Haven't really used the machine much to justify booting it up and cleaning it out.
Looking up what song it may be now. I assume the music video in 8.1, you're referring to "The Old Apartment" by the Barenaked Ladies. Was quite a catchy tune. Now it's confined solely to my install discs and off my HD, think about it, a video entitled "The Old Apartment - Bakenaked Ladies" often gets a few awkward stares from friends and parents alike!