OK, this is a song that came entirely from a silly phrase sloshing around my head. Don't look for any meaning in this, it's entirely wordplay. I think the main choir/organ part is subconsciously derived from the Coventry Carol, which to be fair, I am quite fond of.

Originally I was going to try and record the guitar lines by misusing the bass, and I might still do that. But for now I'm using the Hammond SK1's clavinet patch and it sounds nice like that.
A video short clip of how I did the backwards part is available here: https://twitter.com/tapewolf/status/975504540354203649
All editing was done with razorblades and luck. I'm not sure I'll be able to replicate it exactly for the final mix of the song.
I think the bass is a little off-tune in some of the earlier parts so that is something I'll have to look into before then.

Instruments used included:
Gem RPx Piano module
Hammond XM1 organ module with H&K Rotosphere
Hammond SK1 for pipe organ and clavinet
Aeolus organ synthesizer (on a raspberry Pi)
Roland MVS1, Roland JV1010
Manikin Memotron
Minimoog Voyager
Waldorf MicroWave
Alesis DM10
Steinberger XT2 bass
...and probably a few more I've forgotten about.

Recording was done on a TASCAM TSR-8, Otari MX80 and a Studer A807 for the final mix.
With apologies to Mr. McCartney.

Twenty years ago today
Sergeant Pepper taught the band
A lesson in Fire and Blood

Twenty years ago today
Sergeant Pepper built an Ark
And sailed out on the Flood

Twenty years ago today
Sergeant Pepper taught the band to play
Mahjong and chess

Twenty years ago today
Sergeant Pepper taught the band
The meaning of the word 'distress'

Twenty years ago today
Sergeant Pepper taught the band
A lesson in Fire and Blood