Quiz: What pop group am I thinking of?

Hints: It helps if you are from Scandinavia or Eastern Europe; that's where they have been most successful so far. For the usual photo line-up the guy on the right should stand in the middle.

The image (has been cut) is made by comics artist Jack Kirby

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Update!: Mr Stationsvakt obviously didn't think this was a hard one to crack! Bravo! Here are a few links to follow if you want the answer: Wikipedia link Eng, Swe, Search on YouTube, Official web site, Authorised fan site, Other fan site, Photo #1, Photo #2,Photo #3, Photo #4

My photo montage.

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