One of my many fun hobbies:
1) Open
this video
2) Pause it before it starts playing
3) Open a new tab, then open
this video
4) Mute the volume on it (there's a volume slider on the video; use that)
5) When the second video starts playing, about 3 seconds in, flip back to the first tab and hit Play
6) Flip back to the second tab and watch the video
7) ?
8) profit
I've also found videos of that music pasted onto Egg Dragoon and Time Eater boss fights; they're pretty darn cool