She's a Rainbow - Laura Marsh

https://m.youtube.com/watch?v=wTQxiGJzR_I


This post may be wrong.
For example in this version (Capitol studios live)
https://m.youtube.com/watch?v=524xAvu1df8#fauxfullscreen
The equivalent of
C bass and E, A
B bass and D, A
F bass and A, F, E at vocal
but one halftone down is possibly played.
ie key G sharp minor (attention many sharps):
B6
A7
E7


It may initially appear as A minor to an F major 7th chord progression but it actually is a halftone below, ie:
A flat minor to F flat major 7th ie
bA bC bE (A flat minor 3rd)
bF bA bC bE (F flat major 3rd major 7th)


Or if it is thought as written on the G sharp minor key, it is:
#G B #D
E #G B #D


So many black keys on a song possibly give a mysterious sound.


See also:


Bach bass rules - Bach, Niedt


Harmony - Piston