Seems like every band that was popular in the 80's or 90's was from Sweden.Ace of Base for instance and I was going to say Falco "Rock me Amadeus" but apparently they were from Austria.
Yes that´s Aha. The two most famous songs of Dr. Alban are It's my life (which was an alltime favorite song of mine) and 'Sing halelulja' not sure if I wrote that correctly.