Deth Païs
A hearty thanks to Sasha for his kindly highlight over at his New Yorker blog. "Submarine makeout music" is a wonderful description, especially as it (unconsciously?) references Ricardo Villalobos' remix of Thomas Dolby's "One of Our Submarines" -- one of the greatest remixes ever, of one of the greatest pop songs ever. That ain't a bad foundation for a genre with a floundering name.
(All the above photos are from Catalunya's Vall d'Aran. I didn't see any submarines there, but I'm sure that green church could double for one in a pinch.)