I’ve never quite been able to figure out Kate Bush, but this video, posted to the forums over the weekend by our friend "Langley" from Australia, might be a clue:
As Langley posted in the forum:
The song is a look at a special relationship between a boy and his father. It describes psychologist Wilhelm Reich’s arrest and imprisonment through the eyes of his son, Peter, who wrote his father’s story in A Book Of Dreams, published in 1973, on which the song is based. Wilhelm Reich is the inventor of the cloudbuster, which looks very much like the machine that is pictured on the cover of this single.
The music video, directed by Julian Doyle and conceived by Terry Gilliam and Kate Bush, features Donald Sutherland playing a father, and, most famously, Bush playing a young boy.
And it might be helpful to read the lyrics while listening to the tune (or after viewing the video).