Another change of pen here. It's getting to be a habit!

That aside, I do love the Doctor's "Groogh!" (first seen in that other masterpiece from my mis-spent youth, DajbDevil!) and the song.

"The runaway hill came over the train" - not only a wonderfully surreal image in itself but the way it segues into the "Hoorah! Hoorah!" from "When Johnny Comes Marching Home" ...? An instant classic if ever I heard one!

And all decades before it became quite the thing for songwriters to steal the hooks from (sorry, sample!) other songs!