From Hawkwind trying to get the audience to crap themselves:
http://www.youtube.com/watch?v=qRw_rvrXQiQ&feature=playe...
To Coil and their Time machines:
http://brainwashed.com/common/htdocs/discog/eskaton10.php?si...
The Hafler trios experiments (Andrew Mackenzie seems determined to erase himself from history so can't find a relevant link)
and many many more - there is probably at least one book in mankinds search for music that alters the mind - that I can't be bothered researching for this comment.
And of course - if any of this actually worked don't you think it would have been around and available for a very long time?
( and its not just sound either - Gysin was playing wih light - perhaps a more promising line of investigation given epilepsy can be triggered with light: