It's an idiotically cheerful voice that's laughing.

"Wahahaha! You have such a pretty face, but your singing is way outta tune! Hilarious!"

"But your voice is pretty, so I'm sure you'll get better with some training! I love it!"

After that, I hear my own voice shouting int frustration, as well as the sound of me throwing a chair and probably a bunch of other things at him, and the loud noise of him gracefully but irritatingly dodging all that. It continues on...

And even in the midst of all that, a beautiful melody continues to play. There's no way any kind of store would have this playing, and I mean that in a bad way. In this large universe, it exists only in my iPod as a worthless bunch of notes.