Some lesser known black metal bands (correct me if I'm wrong) that are pretty cool are Sigh (from China), Xathrites (middle east), Darvulia, Benighted in Sodom and Hate forest, Hate forest has some pretty unique vocals in my opinion as they don't have the typical vocal style as most black metal bands. Most of black metal actually puts me to sleep or I find peaceful as well... Not sure if ironic or not but whatever. :P