i guess it's swedish(some say turkish too)
also a lovely melody
enjoy
ps: i'm not partial to any nation
(Also Röyksopp are Norwegian)
But if speaking of beautiful languages, I always liked Arabic. Especially that specific accent spoken in Lebanon. Wish I would have time/energy to learn it.
Mandarin is a delight to listen to.
and that comes from someone raised on the horrific operatic screeches of Cantonese
(try watching a few Hong Kong movies, and I'm sure you will understand).