she gave me a few different artists (which, correction, are more finnish than norwegian), but the only ones I really remember are Boys of Scandinavia, Happy-go-lucky, and Håkan Hellström (though only the first band sounds like the cosmic disco you posted *g*).

Boys of Scandinavia - "Don't Wish Upon A Star" (http://bing.morning-songs.com/music/Boys%20of%20Scandinavia%20-%20Don't%20Wish%20Upon%20A%20Star.mp3)
Boys of Scandinavia - "Good Looking" (http://bing.morning-songs.com/music/Boys%20of%20Scandinavia%20-%20Good%20Looking.mp3)
Boys of Scandinavia - "Why Do You Love Me" (http://bing.morning-songs.com/music/Boys%20of%20Scandinavia%20-%20Why%20Do%20You%20Love%20Me.mp3)
Boys of Scandinavia - "Worse Than A Girl" (http://bing.morning-songs.com/music/Boys%20of%20Scandinavia%20-%20Worse%20Than%20A%20Girl.mp3)
Håkan Hellström - "Kom igen Lena!" (http://bing.morning-songs.com/music/H%e5kan%20Hellstr%f6m%20-%20Kom%20igen%20Lena!.mp3)
Happy-Go-Lucky - "Gloomy Afternoon" (http://bing.morning-songs.com/music/Happy-Go-Lucky%20-%20Gloomy%20Afternoon.mp3)
Happy-Go-Lucky - "Kind of Red" (http://bing.morning-songs.com/music/Happy-Go-Lucky%20-%20Kind%20of%20Red.mp3)