http://www.youtube.com/watch?v=Kf__D_hDUVU

This is the main musical theme from a video game that I used to love, called Shadow Man; which believe it or not was actually about projecting into the Afterlife, among other things.  This game, however, was probably the first place I ever came across the idea of retrieval as a concept.

Don't mind the image.  The game is decidedly Cthonic; it's somewhat oriented towards Vodoun.