Does anybody know artist and title of this background music of this children series from the 70's?
http://nl.youtube.com/watch?v=DhLnO3UuvY4

I'm quite sure it's not from Jethro Tull and not from Focus, but it sounds like it. By the way does anybody know the name of the musical instrument that makes the siren alike sound at the beginning?
Many, many thanks!!!