What's the drone thing? I noticed that it's sounds pitched to the lowest note in the song.

That's me improvising the accompaniment on our Indian harmonium in (gulp!) real time; I have a perverse approach to drones & modality, and the modulations thereof, but when it works, as this did, it can be quite effective.

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Sorry to all good folks for using the word tit back there by the way, it should really have been nork or, in honour of H. E. Bates (whose influence Ralphie was obviously labouring under when he wrote the song) nelly.