Looks more like some kind of Celtic thing rather than art-nouveau I'd say.
from 2:14 onsaw this amazing Caroline Polachek video where she sang acapella and realised that it wasn't autotune, she just has this really weird technique.
I like a lot of stuff she's been involved in but she also has a slight Sarah Brightman energy doesn't she.
post some more of the old ones pleaseI like the mystery of the older OPN gear. I like the later stuff too, but now it's just Dan Lopatin doing his new record on Warp with whichever set of collaborators he fancies using. Bit too slick and professional. There's a magic to the grainy sounds and clips.