"The theme that starts the prog is 'House of the King' by Dutch band, Focus featuring Thijs van Leet on Flute but actually written by guitarist Jan Akkerman. The music used to end the prog is Hocus Pocus also by Focus. This one was written by van Leer and Akkerman and it stops before we get to hear the yodelling (honest). HOuse of the King was indeed used in a science programme many years ago. It was called 'Don't Ask Me' and featured people like Magnus Pike, Miriam Stoppard and David Bellamy. Focus are still touring to this day although their astonishing guitarist, Jan Akkerman, is no longer a member. He prefers to tour with his own band and comes to the UK almost every year. Snippts of other Focus music have also been used (Anonymous II) being the one that spings to mind."