Good question. As much as I love Marilyn Manson, that song seemed like a random choice as the opener.
I, personally, loved the film's score which was done by Carter Burwell and never understood why they didn't allow him to compose an opening song. I think the style he did for the film would have went very well with the birds eye forest scenery.
F'ng love Carter's work. BoS may have its issues, but damn is that one extraordinary, and complex, soundtrack.
I was glad to read that he was pleased with the score as well...
The score references the woods where the film takes place - the woods in which we get lost and never make it home. I began by taking a piece I'd already recorded called "Rock Water Wind", which uses the sounds of slapping water, tapping and scraping rocks, and samples of wind blowing, to build a series of loops. I then expanded on this idea with two musicians I've worked with for years, the guitarist David Torn and the percussionist Geoffrey Gordon. The final sound palette was a combination of natural sounds and electric noises.
The story of the film itself is less happy than the score. Joe Berlinger had created a self-referential sequel to The Blair Witch Project, and used it to ask questions about the influence of film and media on us, while repeatedly pulling the carpet out from under the characters and the audience. The film company Artisan ultimately convinced Joe to add unmotivated scenes of gore and violence - apparently in the belief that this is what people want from a "horror" film - although this was not true of the original Blair Witch film. The end result was not terribly successful - emotionally, intellectually, or financially - but I hope some of the filmmakers' ambitions still show through.
However the intimate recording of the score - just we three musicians shacked up in my studio with Dean Parker, my assistant - was a thoroughly enjoyable experience and I'm still very fond of the sounds that resulted.
(and the name of the image file - BW2_carterbslappin3.jpg - lol!