"Back in 1975 there was a popular movement in sweden against the music competition Melodifestivalen. The young people fought big music corporations, and most evil of them all was Stikkan Andersson, founder of Polar Records and also ABBA's manager.
Among other things the movement arranged the Alternativfestivalen as an alternative for Melodifestivalen. It was here that Ulf Dageby performed Doin the Omoralisk Schlagerfestival under the name Sillstryparn."
Added by anteapel
Updated: Article in Aftonbladet (Sweden's most read newspaper) today (10th of March) about this song and how the progressive/political tendencies back then actually was hot stuff.