Yayla is a one-man-band created by Emir Togrul in 2007. He plays a kind a really nihilistic Black Metal influenced by Burzum / Xasthur but also by Ambiant, Industrial Music, Rock, and a lot of other things that makes it unique. His first album "Ruhizolasyon" (That means spirit-isolation), is a real wall of noise with high synths. It's one of his most powerful records. Then comes "Sathimasal" that is the one made him kind of "famous". Not his best release but a good one. He also made Fear Through Eternity, an only ambiant / medieval album that is actually the soundtrack of the self-titled film made by Emir Togrul as well that you can watch legally here : http://vimeo.com/76544669 (It's short and pretty good). And then last year came Nihaihayat, a hard-listening album but also a masterpiece that I put a link to a song there.
Enjoy !
PS : If you want more informations feel free to ask me