"but it surely demonstrates the point that the bagpipes were a historic technological stepping stone
in the evolution of sound towards the Moog synthesiser.."

Northumbrian smallpipes, even more so! Whenever I listen to Billy Pigg, I always think it sounds like a Moog.

You're right about the daleks vocals - definitely a hint of the Frank Harte/Margaret Barry/Peter Bellamy stridency to them. (And I mean that in the nicest possible way)