Did you keep waiting for the moment where something was going to go horribly wrong?
Yeah, me too.
This Indonesian dentist is well aware of the fact that dental drills can be a little bit... err... intimidating. So, he created a drill that, instead of making the typical whirring and buzzing noises a drill makes, plays audio of the patient's favorite songs from an MP3 player. Nothing like a little Gangnam Style to ease the nervousness of having a whizzing metal object shoved into your mouth (no, don't even go there...).