It's all very steampunk-esque, if the band name didn't give it away. A peculiar, eccentric variant of black metal produced by people with names like Mister Curse, Katheryne, Queen of Ghosts, and The Gentleman. Faux Victoriana abound, smog and streetlamps and murderous intentions. I recommend watching this video full screen, high resolution with headphones on. It's really quite lovely, if something this deranged could ever be called lovely.
Brief Update: I gather from the band's somewhat chaotic website that the new album that Gatherer Of The Pure is from is due out in three weeks. I shall be sure to check it out.