Sometime ago I acquired a couple of CDs of music from the Damanhur cult in Italy:

http://www.damanhur.org/

They were pretty well done, and one of them (three women singing in a sort of southern-European folk polyphony, the words being in Damanhur's made-up language) was downright good.

It got me curious to know what else was out there. Damanhur seem ditzy but harmless (and their members include some gorgeous women, where do I sign up?). George Gurdjieff's music is quite widely available and bit more mainstream.   Others are something else:

David Koresh (should have stuck to the day job, on this hearing; Charles Manson was a lot better)

The Church Universal and Triumphant

It seems David Icke doesn't sing himself, but this is what's on his iPod: playlist. Not quite clear who actually produced this reggae video featuring Icke and his equally batty pal Credo Mutwa: Reptiliad.

I would love to hear this but none of it seems to be online: Otto Muehl.

Shoko Asahara, founder of Aum Shinri Kyo

I tried to find any songs by Benjamin Creme and failed. Are there any?