Hmm. Aren't The Rasmus from Finland?
They have a huge hit all over Europe now.

Didn't know they had a hit - I suppose I should listen to the radio more.
And OK, there's H.I.M. (heavy rock), and of course Hanoi Rocks... And the 2 or 3 computer programmers - sorry, musicians - that had a cople of techno/dance hits, Darude and... can''t remember what the other guys were called. But not anything like the massive success of the Swedes since ABBA.