I would like to know who wrote "unfurl"

I thought this week when I listened to it, that the song could have to do with either drugs or smoking, because of "release the vapor into the lungs."
 
Question: Would you like it if Unfurl was to be Katatonias new direction - Anders said in some thread that that was considered.

Personally i think it would be too much (too less) with that kind of general direction. Unfurl is not metal at all, and it seems wrong for Katatonia to leave the metal behind all together. But to fuse it with some fancy metal stuff seems interesting...