I can actually do extremely low throat gurgles/growls, something like Mark Rawls, that did vocals in several brutal death/slam bands. The thing is that they are made using the throat, which is wrong, can be painful and cause damage. Nonetheless, the vocals are extremely good and very demonic, if I had a band, I would do something with these vocals, I even recorded some covers and they turned out to be pretty good. I can also do some range of strange inhaled vocals and even some weird noise like that vocal on Awaiting the Autopsy.