Zeal and Ardor produce some of the strangest crossover things I've heard in awhile. They blend black metal with negro spirituals. Negro spirituals are songs composed by African slaves in the United States. Back then, slaves weren't allowed to have instruments so they accompagnied their chants with hand claps and drumming on everything they could get their hands on. Now, this mysterious Zeal and Ardor project threw some brutal black metal into the mix and the results are nothing short of fascinating.
Besides the black metal influences, reminding me of anything between Impaled Nazarene and Children Of Bodom, there are those powerful chants, nudging towards old blues, soul and gospel. Furthermore, there's a decent slab of electronics, making this a fascinating musical journey.
Check it out!!!