This was sung by the Dutch band Teach-in at the 1975 Eurovision Song Contest in Stockholm. The Band sung first and won. The song was heavily criticised for it's childish, non-sensical lyrics, but remains one of the catchiest songs to have won the contest. Unfortunately for the Dutch this would be their last win as of yet.
This band will compete in the 2007 Finnish national final for the Eurovision Song Contest. Here is a few pictures of them that I set to the music track "Jata mut". This song is their last promo CD single release.