http://www.youtube.com/watch?v=dU3H1Um4Ju4
I just realized that Spinal Tap's "Stonehenge" is the most awesome song ever to put in an endless loop for the purpose of playing RPGs. While the obvious utility is for Dungeons and Dragons, Shadowrun actually has druids and elves and crap. Therefore, it's important to play this in an endless loop whenever a player character uses astral projection, pause it when the character stops projecting, and unpause it as soon as anyone goes into the astral again.