Their Turkish seems a little different, that is slower< than most Turkish Groups, are they from a certain region?

They are from Seattle, (USA)

Really!

Kaan Tangöze (vocal) and Ari Barokas (bass) met in Seattle, they made an album together, with Yakup Trana, another alternative singer known as "Yakup". That was another band. When Kaan and Ari came to Turkey, they formed Duman with Batuhan Mutlugil (guitar).

Actually, they are all from İstanbul, I guess. Not from a special region. Their favorite bands are slow/alternative as well. When they made their first album, rock-alternative Turkish music sounds with Anatolian/Istanbul melodies became more famous. Maybe they had the same music in thier mind but they could not show it. But after that type is popular (such as Ogün Sanlısoy), perhaps they decided to show it too. Who knows

Thanks Caliptrix. When I ever get to Turkey, I want to see some concerts.

Yes, because he's all the time on drugs