I think I am confusing myself here and wanted a sense check please if possible?
As an example, in the progression:
F Major / F7 / Bb Major / Eb7 / Gminor / C7 / Fmajor
Eb7 is a plagal chord, and can be used instead of Bb Major, allowing the 7th note to descend a half step. Great!
In the book I am reading at the moment, it says "plagal can mean either IV or VII7 or both"
I am taking this to mean in the example given either Bb Major or Eb7
But, I am a bit lost here, doesn't a VII7 chord mean a half diminished chord?
As an example, in the progression:
F Major / F7 / Bb Major / Eb7 / Gminor / C7 / Fmajor
Eb7 is a plagal chord, and can be used instead of Bb Major, allowing the 7th note to descend a half step. Great!
In the book I am reading at the moment, it says "plagal can mean either IV or VII7 or both"
I am taking this to mean in the example given either Bb Major or Eb7
But, I am a bit lost here, doesn't a VII7 chord mean a half diminished chord?